forked from luck/tmp_suning_uos_patched
286e310f94
tg3_nvram_write_block_unbuffered() is reading data from nvram into allocated buffer before overwriting a part of it with user-supplied data. Then it feeds the entire page back to nvram. It should be storing the words it had read as little-endian, not as host-endian. Note that tg3_set_eeprom() does exactly that for padding the same data to full words before it gets passed down to tg3_nvram_write_block() and then to tg3_nvram_write_block_unbuffered(). Moreover, when we get to sending the entire thing back to nvram, we go through it word-by-word, doing essentially writel(swab32(le32_to_cpu(word)), ...) so if we want them to reach the card in host-independent endianness, we'd better really have all that buffer filled with fixed-endian. For user-supplied part we obviously do have that (it's an array of octets memcpy'd in), ditto for padding of user-supplied part to word boundaries (taken care of in tg3_set_eeprom()). The rest of the buffer gets filled by tg3_nvram_write_block_unbuffered() and it would damn better be consistent with that (and with tg3_get_eeprom(), while we are at it - there we also convert the words read from nvram to little-endian before returning the buffer to user). The bug should get triggered on big-endian boxen when set_eeprom is done for less than entire page. Then the words that should've been unaffected at all will actually get byteswapped in place in nvram. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net> |
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| .. | ||
| acorn/char | ||
| acpi | ||
| amba | ||
| ata | ||
| atm | ||
| auxdisplay | ||
| base | ||
| block | ||
| bluetooth | ||
| cdrom | ||
| char | ||
| clocksource | ||
| connector | ||
| cpufreq | ||
| cpuidle | ||
| crypto | ||
| dca | ||
| dio | ||
| dma | ||
| edac | ||
| eisa | ||
| firewire | ||
| firmware | ||
| hid | ||
| hwmon | ||
| i2c | ||
| ide | ||
| ieee1394 | ||
| infiniband | ||
| input | ||
| isdn | ||
| kvm | ||
| leds | ||
| lguest | ||
| macintosh | ||
| mca | ||
| md | ||
| media | ||
| message | ||
| mfd | ||
| misc | ||
| mmc | ||
| mtd | ||
| net | ||
| nubus | ||
| of | ||
| oprofile | ||
| parisc | ||
| parport | ||
| pci | ||
| pcmcia | ||
| pnp | ||
| power | ||
| ps3 | ||
| rapidio | ||
| rtc | ||
| s390 | ||
| sbus | ||
| scsi | ||
| serial | ||
| sh | ||
| sn | ||
| spi | ||
| ssb | ||
| tc | ||
| telephony | ||
| uio | ||
| usb | ||
| video | ||
| virtio | ||
| w1 | ||
| watchdog | ||
| xen | ||
| zorro | ||
| Kconfig | ||
| Makefile | ||