Commit faded9b5 authored by Wenchao Chen's avatar Wenchao Chen Committed by Ulf Hansson
Browse files

mmc: sdhci: Fix host->cmd is null 



When data crc occurs, the kernel will panic because host->cmd is null.

Signed-off-by: default avatarWenchao Chen <wenchao.chen@unisoc.com>

Fixes: efe8f5c9 ("mmc: sdhci: Capture eMMC and SD card errors")
Cc: stable@vger.kernel.org
Acked-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/20220907035847.13783-1-wenchao.chen666@gmail.com


Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent 80e78fcc

drivers/mmc/host/sdhci.c

+2 −2
Original line number Diff line number Diff line
@@ -3928,7 +3928,7 @@ bool sdhci_cqe_irq(struct sdhci_host *host, u32 intmask, int *cmd_error, 


	if (intmask & (SDHCI_INT_INDEX | SDHCI_INT_END_BIT | SDHCI_INT_CRC)) {

		*cmd_error = -EILSEQ;

		if (!mmc_op_tuning(host->cmd->opcode))

		if (!mmc_op_tuning(SDHCI_GET_CMD(sdhci_readw(host, SDHCI_COMMAND))))

			sdhci_err_stats_inc(host, CMD_CRC);

	} else if (intmask & SDHCI_INT_TIMEOUT) {

		*cmd_error = -ETIMEDOUT;
@@ -3938,7 +3938,7 @@ bool sdhci_cqe_irq(struct sdhci_host *host, u32 intmask, int *cmd_error, 


	if (intmask & (SDHCI_INT_DATA_END_BIT | SDHCI_INT_DATA_CRC)) {

		*data_error = -EILSEQ;

		if (!mmc_op_tuning(host->cmd->opcode))

		if (!mmc_op_tuning(SDHCI_GET_CMD(sdhci_readw(host, SDHCI_COMMAND))))

			sdhci_err_stats_inc(host, DAT_CRC);

	} else if (intmask & SDHCI_INT_DATA_TIMEOUT) {

		*data_error = -ETIMEDOUT;