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drivers: mmc: Fix R2 response type definition 

The Poplar is broken on eMMC initialization because of commit
2a82a9c95f ("drivers: emmc: dw_mmc: Add response flag into response ID
definition").  It changes the driver behavior on response type handling
in dw_send_cmd(), because MMC_RESPONSE_R(2) and MMC_RESPONSE_R2 are
different things.  MMC core is still sending the former while we already
changed to check the latter in dw_mmc driver.

This patch fixes R2 response type in MMC core code.  It's the same
thing as what commit 94522ff7f6 ("drivers: mmc: Fix R3 response type
definition") does for R3 response.

With this fix, Poplar is back to work.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
This commit is contained in:
Shawn Guo 2018-09-28 14:21:01 +08:00
parent 9068257ea7
commit a2a69bc89f
1 changed files with 2 additions and 2 deletions
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4
drivers/mmc/mmc.c
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@ -427,7 +427,7 @@ static int mmc_enumerate(unsigned int clk, unsigned int bus_width)
}
/* CMD2: Card Identification */
ret = mmc_send_cmd(MMC_CMD(2), 0, MMC_RESPONSE_R(2), NULL);
ret = mmc_send_cmd(MMC_CMD(2), 0, MMC_RESPONSE_R2, NULL);
if (ret != 0) {
return ret;
}
@ -452,7 +452,7 @@ static int mmc_enumerate(unsigned int clk, unsigned int bus_width)
/* CMD9: CSD Register */
ret = mmc_send_cmd(MMC_CMD(9), rca << RCA_SHIFT_OFFSET,
MMC_RESPONSE_R(2), &resp_data[0]);
MMC_RESPONSE_R2, &resp_data[0]);
if (ret != 0) {
return ret;
}