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| author |   Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> | 2020-03-24 11:40:46 +0530 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-03-26 15:51:08 +0100 |
| commit | 93e17a44347acd747a76d63dd9339e48c2c9e308 (patch) | |
| tree | 0fc963d7eb7e6c189f95f661938c3ff8b3d63e82 /drivers/bus | |
| parent | bus: mhi: core: Add support for reading MHI info from device (diff) | |
| download | linux-dev-93e17a44347acd747a76d63dd9339e48c2c9e308.tar.xz linux-dev-93e17a44347acd747a76d63dd9339e48c2c9e308.zip | |
bus: mhi: core: Initialize bhie field in mhi_cntrl for RDDM capture
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: 6fdfdd27328c ("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>
Diffstat (limited to 'drivers/bus')
| -rw-r--r-- | drivers/bus/mhi/core/init.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/bus/mhi/core/init.c b/drivers/bus/mhi/core/init.c index d136f6c6ca78..f6e3c16225a7 100644 --- a/drivers/bus/mhi/core/init.c +++ b/drivers/bus/mhi/core/init.c @@ -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); |