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| author | Bhaumik Bhatt <bbhatt@codeaurora.org> | 2020-05-21 22:32:41 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-05-22 09:35:42 +0200 |
| commit | a21eaf592fad132cb60173ed494e54c5b9c82c9a (patch) | |
| tree | 74e2d4568c06bda3a5c2a3310baaccdcdf649e7f /drivers/bus | |
| parent | 560e3a045961ed0c7184ef9f6a93b95bd38c1c48 (diff) | |
| download | linux-a21eaf592fad132cb60173ed494e54c5b9c82c9a.tar.bz2 | |
bus: mhi: core: Return appropriate error codes for AMSS load failure
When loading AMSS firmware using BHIe protocol, return -ETIMEDOUT if no
response is received within the timeout or return -EIO in case of a
protocol returned failure or an MHI error state.
Signed-off-by: Bhaumik Bhatt <bbhatt@codeaurora.org>
Reviewed-by: Jeffrey Hugo <jhugo@codeaurora.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20200521170249.21795-7-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/boot.c | 23 |
1 files changed, 12 insertions, 11 deletions
diff --git a/drivers/bus/mhi/core/boot.c b/drivers/bus/mhi/core/boot.c index 17c636b4bc6e..cf6dc5a2361c 100644 --- a/drivers/bus/mhi/core/boot.c +++ b/drivers/bus/mhi/core/boot.c @@ -176,6 +176,7 @@ static int mhi_fw_load_amss(struct mhi_controller *mhi_cntrl, void __iomem *base = mhi_cntrl->bhie; rwlock_t *pm_lock = &mhi_cntrl->pm_lock; u32 tx_status, sequence_id; + int ret; read_lock_bh(pm_lock); if (!MHI_REG_ACCESS_VALID(mhi_cntrl->pm_state)) { @@ -198,19 +199,19 @@ static int mhi_fw_load_amss(struct mhi_controller *mhi_cntrl, read_unlock_bh(pm_lock); /* Wait for the image download to complete */ - wait_event_timeout(mhi_cntrl->state_event, - MHI_PM_IN_ERROR_STATE(mhi_cntrl->pm_state) || - mhi_read_reg_field(mhi_cntrl, base, - BHIE_TXVECSTATUS_OFFS, - BHIE_TXVECSTATUS_STATUS_BMSK, - BHIE_TXVECSTATUS_STATUS_SHFT, - &tx_status) || tx_status, - msecs_to_jiffies(mhi_cntrl->timeout_ms)); - - if (MHI_PM_IN_ERROR_STATE(mhi_cntrl->pm_state)) + ret = wait_event_timeout(mhi_cntrl->state_event, + MHI_PM_IN_ERROR_STATE(mhi_cntrl->pm_state) || + mhi_read_reg_field(mhi_cntrl, base, + BHIE_TXVECSTATUS_OFFS, + BHIE_TXVECSTATUS_STATUS_BMSK, + BHIE_TXVECSTATUS_STATUS_SHFT, + &tx_status) || tx_status, + msecs_to_jiffies(mhi_cntrl->timeout_ms)); + if (MHI_PM_IN_ERROR_STATE(mhi_cntrl->pm_state) || + tx_status != BHIE_TXVECSTATUS_STATUS_XFER_COMPL) return -EIO; - return (tx_status == BHIE_TXVECSTATUS_STATUS_XFER_COMPL) ? 0 : -EIO; + return (!ret) ? -ETIMEDOUT : 0; } static int mhi_fw_load_sbl(struct mhi_controller *mhi_cntrl, |