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bus: mhi: core: Initialize bhie field in mhi_cntrl for RDDM capture

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The bhie field in mhi_cntrl needs to be initialized to proper register
base in order to make mhi_rddm_prepare() to work. Otherwise,
mhi_rddm_prepare() will cause NULL pointer dereference.

Fixes: 6fdfdd2732 ("bus: mhi: core: Add support for downloading RDDM image during panic")
Reported-by: Hemant Kumar <hemantk@codeaurora.org>
Reviewed-by: Jeffrey Hugo <jhugo@codeaurora.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20200324061050.14845-4-manivannan.sadhasivam@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Manivannan Sadhasivam 2020-03-24 11:40:46 +05:30 committed by Greg Kroah-Hartman
parent 3316ab2b45
commit 93e17a4434
1 changed files with 2 additions and 1 deletions
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3
drivers/bus/mhi/core/init.c
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@ -979,7 +979,8 @@ int mhi_prepare_for_power_up(struct mhi_controller *mhi_cntrl)
goto bhie_error;
}
memset_io(mhi_cntrl->regs + bhie_off + BHIE_RXVECADDR_LOW_OFFS,
mhi_cntrl->bhie = mhi_cntrl->regs + bhie_off;
memset_io(mhi_cntrl->bhie + BHIE_RXVECADDR_LOW_OFFS,
0, BHIE_RXVECSTATUS_OFFS - BHIE_RXVECADDR_LOW_OFFS +
4);