Commit Graph

53602 Commits

Author SHA1 Message Date
Michael Chan
40453c839f [BNX2]: Add 40-bit DMA workaround for 5708.
The internal PCIE-to-PCIX bridge of the 5708 has the same 40-bit DMA
limitation as some of the tg3 chips.  Set dma_mask and persistent DMA
mask to 40-bit to workaround.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-03 13:19:18 -07:00
Michael Chan
5bae30c96a [BNX2]: Fix register and memory test on 5709.
Tweak registers and memory test range for 5709.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-03 13:18:46 -07:00
Michael Chan
dad3e452da [BNX2]: Block MII access when ifdown.
The device may be in D3hot state and should not allow MII register
access.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-03 13:18:03 -07:00
Michael Chan
427c2196b9 [ETHTOOL]: Add 2.5G bit definitions.
Add 2.5G supported and advertising bit definitions.  2.5G is supported
by the bnx2 driver.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-03 13:17:25 -07:00
Patrick McHardy
fc38582db9 [NETFILTER]: bridge netfilter: consolidate header pushing/pulling code
Consolidate the common push/pull sequences into a few helper functions.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-03 03:36:16 -07:00
Herbert Xu
cfd6c38096 [NETFILTER]: sip: Fix RTP address NAT
I needed to use this recently to talk to a Cisco server.  In my case
I only did SNAT while the Cisco server used a different address for
RTP traffic than the one for SIP.  I discovered that nf_nat_sip NATed
the RTP address to the SIP one which was unnecessary but OK.  However,
in doing so it did not DNAT the destination address on the RTP traffic
to the Cisco back to the original RTP address.

This patch corrects this by noting down the RTP address and using it
when the expectation fires.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-03 03:35:31 -07:00
Jorge Boncompte
c2a1910b06 [NETFILTER]: nf_nat_proto_gre: do not modify/corrupt GREv0 packets through NAT
While porting some changes of the 2.6.21-rc7 pptp/proto_gre conntrack
and nat modules to a 2.4.32 kernel I noticed that the gre_key function
returns a wrong pointer to the GRE key of a version 0 packet thus
corrupting the packet payload.

The intended behaviour for GREv0 packets is to act like
nf_conntrack_proto_generic/nf_nat_proto_unknown so I have ripped the
offending functions (not used anymore) and modified the
nf_nat_proto_gre modules to not touch version 0 (non PPTP) packets.

Signed-off-by: Jorge Boncompte <jorge@dti2.net>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-03 03:34:42 -07:00
Patrick McHardy
327850070b [NETFILTER]: ipt_DNAT: accept port randomization option
Also accept the --random option for DNAT to allow randomly selecting a
destination port from the given range.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-03 03:34:03 -07:00
Ilpo Järvinen
0ec96822d5 [TCP]: Use S+L catcher only with SACK for now
TCP has a transitional state when SACK is not in use during
which this invariant is temporarily broken. Without SACK,
tcp_clean_rtx_queue does not decrement sacked_out. Therefore
calls to tcp_sync_left_out before sacked_out is again
corrected by tcp_fastretrans_alert can trigger this trap as
sacked_out still has couple of segments that are already out
of window.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-03 03:30:34 -07:00
David Howells
ec9c948546 [AFS]: Adjust the new netdevice scanning code
Adjust the new netdevice scanning code provided by Patrick McHardy:

 (1) Restore the function banner comments that were dropped.

 (2) Rather than using an array size of 6 in some places and an array size of
     ETH_ALEN in others, pass a pointer instead and pass the array size
     through so that we can actually check it.

 (3) Do the buffer fill count check before checking the for_primary_ifa
     condition again.  This permits us to skip that check should maxbufs be
     reached before we run out of interfaces.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-03 03:29:41 -07:00
Patrick McHardy
dc1f6bff6a [AFS]: Replace rtnetlink client by direct dev_base walking
Replace the large and complicated rtnetlink client by two simple
functions for getting the MAC address for the first ethernet device
and building a list of IPv4 addresses.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-03 03:28:49 -07:00
Patrick McHardy
4e9cac2ba4 [NET]: Add __dev_getfirstbyhwtype
Add __dev_getfirstbyhwtype for callers that don't want a reference but
some data from the device and thus need to take the rtnl anyway.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-03 03:28:13 -07:00
Patrick McHardy
5b35fad9d4 [AFS]: Fix memory leak in SRXAFSCB_GetCapabilities
The interface array is not freed on exit.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-03 03:27:39 -07:00
Patrick McHardy
188ccb5583 [NETLINK]: Fix use after free in netlink_recvmsg
When the user passes in MSG_TRUNC the skb is used after getting freed.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-03 03:27:01 -07:00
Herbert Xu
3f660d66df [NETLINK]: Kill CB only when socket is unused
Since we can still receive packets until all references to the
socket are gone, we don't need to kill the CB until that happens.
This also aligns ourselves with the receive queue purging which
happens at that point.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-03 03:17:14 -07:00
Randy Dunlap
be52178b9f [NET] skbuff: fix kernel-doc
Fix skbuff.h kernel-doc:
linux-2.6.21-git4//include/linux/skbuff.h:316): No description found for parameter 'transport_header'

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-03 03:16:20 -07:00
Robert P. J. Day
825e7d45cf [TCP]: Delete unused header file net/ipv4/tcp_yeah.h.
Delete the apparently unused header file net/ipv4/tcp_yeah.h.

Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-03 03:13:35 -07:00
David Howells
fbb3fcba72 [AFS]: Fix use of __exit functions from __init path
Fix use of __exit functions from __init path.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-03 03:12:46 -07:00
David Howells
80c72fe415 [AFS/AF_RXRPC]: Miscellaneous fixes.
Make miscellaneous fixes to AFS and AF_RXRPC:

 (*) Make AF_RXRPC select KEYS rather than RXKAD or AFS_FS in Kconfig.

 (*) Don't use FS_BINARY_MOUNTDATA.

 (*) Remove a done 'TODO' item in a comemnt on afs_get_sb().

 (*) Don't pass a void * as the page pointer argument of kmap_atomic() as this
     breaks on m68k.  Patch from Geert Uytterhoeven <geert@linux-m68k.org>.

 (*) Use match_*() functions rather than doing my own parsing.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-03 03:11:29 -07:00
David Howells
ef4533f8af [AFS]: Make the match_*() functions take const options.
Make the match_*() functions take a const pointer to the options table
and make strings pointers in the options table const too.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-03 03:10:39 -07:00
Eric Dumazet
709525fad8 [IPV6]: Get rid of __HAVE_ARCH_ADDR_SET.
__HAVE_ARCH_ADDR_SET seems unused these days, just get rid of it.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-03 03:08:43 -07:00
Michael Ellerman
9890b12a4a PCI: Free resource files in error path of pci_create_sysfs_dev_files()
pci_create_sysfs_dev_files() should call pci_remove_resource_files() in
its error path, to match the call it makes to pci_create_resource_files().

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-05-02 19:02:43 -07:00
Tejun Heo
c0affe9db4 pci-quirks: disable MSI on RS400-200 and RS480
MSI doesn't work on RS400-200 and RS480 requiring pci=nomsi kernel
boot parameter for ahci to work.  This patch disables MSI on those
chips.

  http://thread.gmane.org/gmane.linux.ide/17820
  http://thread.gmane.org/gmane.linux.ide/17516
  https://bugzilla.novell.com/show_bug.cgi?id=263893

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-05-02 19:02:43 -07:00
Jan Engelhardt
d4770143fe PCI hotplug: Use menuconfig objects
Use menuconfigs instead of menus, so the whole menu can be disabled at
once instead of going through all options.

Signed-off-by: Jan Engelhardt <jengelh@gmx.de>
Cc: Scott Murray <scottm@somanetworks.com>
Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-05-02 19:02:42 -07:00
Scott Murray
03555d591d PCI: ZT5550 CPCI Hotplug driver fix
cc: Philip Guo <pg@cs.stanford.edu>

Here's a small patch against the current git tree for the ZT5550 CPCI 
hotplug driver to fix an issue with port freeing that Philip Guo found.

Signed-off-by: Scott Murray <scottm@somanetworks.com>
Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-05-02 19:02:40 -07:00
Linas Vepstas
ac1f0e9923 PCI: rpaphp: Remove semaphores
Remove the semaphores from the get routine. These do not 
appear to be protecting anything that I can make out, 
and they also do not seem to be required by the hotplug
driver.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Cc: John Rose <johnrose@austin.ibm.com>
Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-05-02 19:02:40 -07:00
Linas Vepstas
b5661479ee PCI: rpaphp: Ensure more pcibios_add/pcibios_remove symmetry
Calls to pcibios_add should be symmetric with calls to pcibios_remove.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Cc: John Rose <johnrose@austin.ibm.com>
Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-05-02 19:02:40 -07:00
Linas Vepstas
e70ea2634a PCI: rpaphp: Use pcibios_remove_pci_devices() symmetrically
At first blush, the disable_slot() routine does not look
at all like its symmetric with the enable_slot() routine;
as it seems to call a very different set of routines.
However, this is easily fixed: pcibios_remove_pci_devices()
does the right thing.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Cc: John Rose <johnrose@austin.ibm.com>
Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-05-02 19:02:40 -07:00
Linas Vepstas
da65944be2 PCI: rpaphp: Document is_php_dn()
Fix up the documentation: the rpaphp_add_slot() does not actually
handle embedded slots: in fact, it ignores them. Fix the flow of
control in the routine that checks for embedded slots.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Cc: John Rose <johnrose@austin.ibm.com>
Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-05-02 19:02:40 -07:00
Linas Vepstas
8485d1a123 PCI: rpaphp: Document find_php_slot()
Document some of the interaction between dlpar and hotplug.
viz, the a dlpar remove of a htoplug slot uses hotplug to remove it.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Cc: John Rose <johnrose@austin.ibm.com>
Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-05-02 19:02:40 -07:00
Linas Vepstas
fea54b8cc9 PCI: rpaphp: Rename rpaphp_register_pci_slot() to rpaphp_enable_slot()
Rename rpaphp_register_pci_slot() because its easy to confuse
with  rpaphp_register_slot() even though it does something 
completely different. Rename it to rpaphp_enable_slot() because
its almost identical to enbale_slot().

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Cc: John Rose <johnrose@austin.ibm.com>
Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-05-02 19:02:40 -07:00
Linas Vepstas
6f79eb749d PCI: rpaphp: refactor tail call to rpaphp_register_slot()
Eliminate the tail call to rpaphp_register_slot() 
by placing it in the caller. This will help later
dis-entanglement.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Cc: John Rose <johnrose@austin.ibm.com>
Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-05-02 19:02:40 -07:00
Linas Vepstas
c02929c278 PCI: rpaphp: remove rpaphp_set_attention_status()
The rpaphp_set_attention_status() routine seems to be a wrapper
around a single rtas call. Abolish it.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Cc: John Rose <johnrose@austin.ibm.com>
Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-05-02 19:02:39 -07:00
Linas Vepstas
307ff12e35 PCI: rpaphp: remove print_slot_pci_funcs()
The debug function print_slot_pci_funcs() is a large wrapper
around two debug print statements.  Just invoke these directly.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Cc: John Rose <johnrose@austin.ibm.com>
Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-05-02 19:02:39 -07:00
Linas Vepstas
03a6675591 PCI: rpaphp: Remove setup_pci_slot()
The setup_pci_slot() routine appears to be nothing else than
a big, complicated wrapper around pcibios_add_pci_devices().
Remove the wrapping, and call pcibios_add_pci_devices() directly.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Cc: John Rose <johnrose@austin.ibm.com>
Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-05-02 19:02:39 -07:00
Linas Vepstas
ebf42c0edd PCI: rpaphp: remove a call that does nothing but a pointer lookup
Delete another stovepipe: a call to a routine which does nothing.
Remove un-needed semaphore as well.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Cc: John Rose <johnrose@austin.ibm.com>
Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-05-02 19:02:39 -07:00
Linas Vepstas
bf0af511fc PCI: rpaphp: Remove another wrappered function
Remove another stove-pipe; this funcion was called from
two different places, with a compile-time const that is
then run-time checked to perform two different things.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Cc: John Rose <johnrose@austin.ibm.com>
Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-05-02 19:02:39 -07:00
Linas Vepstas
427310ff02 PCI: rpaphp: Remve another call that is a wrapper
Remove another stovepipe: a call which wraps another call, and
just adds printks.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Cc: John Rose <johnrose@austin.ibm.com>
Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-05-02 19:02:39 -07:00
Linas Vepstas
517d5a0417 PCI: rpaphp: remove a function that does nothing but wrap debug printks
Remove a stove-pipe-- a function that is called from only one place, 
does nothing but wraps another function with debug printk's.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Cc: John Rose <johnrose@austin.ibm.com>
Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-05-02 19:02:39 -07:00
Linas Vepstas
3499f0726e PCI: rpaphp: Remove un-needed goto
Remove un-needed goto.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Cc: John Rose <johnrose@austin.ibm.com>
Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-05-02 19:02:39 -07:00
Linas Vepstas
5fd39c35a0 PCI: rpaphp: Fix a memleak; slot->location string was never freed
Fix a memleak; the slot->location string was never freed.
Fix some whitespace and overlong-line probelms while we're here.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Cc: John Rose <johnrose@austin.ibm.com>
Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-05-02 19:02:39 -07:00
Linas Vepstas
31be7586d1 PCI: rpaphp: match up alloc and free in same routine
The routine that called an alloc should be the same routine that 
calles the mathcing free, if anything in the middle failed.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Cc: John Rose <johnrose@austin.ibm.com>
Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-05-02 19:02:38 -07:00
Linas Vepstas
fa1891596c PCI: rpaphp: Remove global num_slots variable
Cleanup cruft: remove the global "num_slots" variable; 
although scattered across multiple files, it is used only 
once, in a debug statement.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Cc: John Rose <johnrose@austin.ibm.com>
Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-05-02 19:02:38 -07:00
Linas Vepstas
bf8cbae475 PCI: rpaphp: Cleanup flow of control for rpaphp_add_slot
Cleanup the flow of control for rpaphp_add_slot(), so as to
make it easier to read. The ext patch will fix a bug in this 
same code. 

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Cc: John Rose <johnrose@austin.ibm.com>
Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-05-02 19:02:38 -07:00
Chuck Ebbert
f14e313650 PCI: add debug information to resource collision message
Add more information to PCI resource collision message
to help with debugging.

Signed-off-by: Chuck Ebbert <cebbert@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-05-02 19:02:38 -07:00
Adrian Bunk
ecf36501bc PCI: the overdue removal of pci_module_init()
Unless we finally completely remove it, people will always add new users.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-05-02 19:02:38 -07:00
Adrian Bunk
5adc55da4a PCI: remove the broken PCI_MULTITHREAD_PROBE option
This patch removes the PCI_MULTITHREAD_PROBE option that had already 
been marked as broken.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-05-02 19:02:38 -07:00
Michael Ellerman
032de8e2fe MSI: Give archs the option to free all MSI/Xs at once.
This patch introduces an optional function, arch_teardown_msi_irqs(),
which gives an arch the opportunity to do per-device teardown for
MSI/X. If that's not required, the default version simply calls
arch_teardown_msi_irq() for each msi irq required.

arch_teardown_msi_irqs() is simply passed a pdev, attached to the pdev
is a list of msi_descs, it is up to the arch to free the irq associated
with each of these as appropriate.

For archs that _don't_ implement arch_teardown_msi_irqs(), all msi_descs
with irq == 0 are considered unallocated, and the arch teardown routine
is not called on them.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-05-02 19:02:38 -07:00
Michael Ellerman
9c8313343c MSI: Give archs the option to allocate all MSI/Xs at once.
This patch introduces an optional function, arch_setup_msi_irqs(),
(note the plural) which gives an arch the opportunity to do per-device
setup for MSI/X and then allocate all the requested MSI/Xs at once.

If that's not required by the arch, the default version simply calls
arch_setup_msi_irq() for each MSI irq required.

arch_setup_msi_irqs() is passed a pdev, attached to the pdev is a list
of msi_descs with irq == 0, it is up to the arch to connect these up to
an irq (via set_irq_msi()) or return an error. For convenience the number
of vectors and the type are passed also.

All msi_descs with irq != 0 are considered allocated, and the arch
teardown routine will be called on them when necessary.

The existing semantics of pci_enable_msix() are that if the requested
number of irqs can not be allocated, the maximum number that _could_ be
allocated is returned. To support that, we define that in case of an
error from arch_setup_msi_irqs(), the number of msi_descs with irq != 0
are considered allocated, and are counted toward the "max that could be
allocated".


Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-05-02 19:02:38 -07:00
Michael Ellerman
7fe3730de7 MSI: arch must connect the irq and the msi_desc
set_irq_msi() currently connects an irq_desc to an msi_desc. The archs call
it at some point in their setup routine, and then the generic code sets up the
reverse mapping from the msi_desc back to the irq.

set_irq_msi() should do both connections, making it the one and only call
required to connect an irq with it's MSI desc and vice versa.

The arch code MUST call set_irq_msi(), and it must do so only once it's sure
it's not going to fail the irq allocation.

Given that there's no need for the arch to return the irq anymore, the return
value from the arch setup routine just becomes 0 for success and anything else
for failure.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-05-02 19:02:38 -07:00