Hi,
在 2016/5/30 15:40, Jaehoon Chung 写道:
After applied "remove lots of IS_ERR_VALUE abuses", it shoold be
misoperation. (commit 287980e49)
If mmc_bus_test is successful, it returned the bus-witdh bit.
The below log is error log
[ 2.542260] mmc0: mmc_select_hs200 failed, error 3
[ 2.542275] mmc0: error 3 whilst initialising MMC card
The same as this patch[0]?
[0]https://patchwork.kernel.org/patch/9139673/
Signed-off-by: Jaehoon Chung <jh80.chung@xxxxxxxxxxx>
---
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 c984321..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) {
+ 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) {
+ if (err > 0) {
err = mmc_select_hs_ddr(card);
if (err)
goto free_card;
--
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