Messages in this thread Patch in this message | | | From | Peter Griffin <> | Subject | [PATCH v2] mmc: core: Only change mode if mmc_select_bus_width() is successful. | Date | Wed, 8 Jun 2016 11:27:52 +0100 |
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mmc_select_bus_width() returns bus width (4 or 8) on success or zero if unsupported. So only change mode if setting the bus width is successful.
Fixes f741494 mmc: fix mmc mode selection for HS-DDR and higher Fixes: 287980e (remove lots of IS_ERR_VALUE abuses)
Signed-off-by: Peter Griffin <peter.griffin@linaro.org> Cc: Chen-Yu Tsai <wens@csie.org> Cc: Arnd Bergmann <arnd@arndb.de>
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v2: Rebase on v4.7-rc2 which includes a fix from Chen-Yu and update commit message. --- drivers/mmc/core/mmc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c index 5d438ad..aafb73d 100644 --- a/drivers/mmc/core/mmc.c +++ b/drivers/mmc/core/mmc.c @@ -1276,7 +1276,7 @@ static int mmc_select_hs200(struct mmc_card *card) * switch to HS200 mode if bus width is set successfully. */ err = mmc_select_bus_width(card); - if (err >= 0) { + if (err > 0) { val = EXT_CSD_TIMING_HS200 | card->drive_strength << EXT_CSD_DRV_STR_SHIFT; err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, @@ -1583,7 +1583,7 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr, } else if (mmc_card_hs(card)) { /* Select the desired bus width optionally */ err = mmc_select_bus_width(card); - if (err >= 0) { + if (err > 0) { err = mmc_select_hs_ddr(card); if (err) goto free_card; -- 1.9.1
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