Bladeren bron

arm: stm32mp: stm32prog: check result of find_mmc_device

Check result of find_mmc_device() before calling mmc_init().

This patch avoid a data abort when the command try to acces
to sd/mmc device deactivated in device tree.

Fixes: aff4c5dd8265 ("stm32mp: stm32prog: add MMC device")
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
Patrick Delaunay 3 jaren geleden
bovenliggende
commit
ded48bec05
1 gewijzigde bestanden met toevoegingen van 1 en 1 verwijderingen
  1. 1 1
      arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog.c

+ 1 - 1
arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog.c

@@ -560,7 +560,7 @@ static int init_device(struct stm32prog_data *data,
 #ifdef CONFIG_MMC
 	case STM32PROG_MMC:
 		mmc = find_mmc_device(dev->dev_id);
-		if (mmc_init(mmc)) {
+		if (!mmc || mmc_init(mmc)) {
 			stm32prog_err("mmc device %d not found", dev->dev_id);
 			return -ENODEV;
 		}