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mmc: mmc_spi: correct the while condition

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When variable i will become 0, while(i--) loop breaks but variable i will
again decrement to -1 because of i-- and that's why below condition
"if (!i && (r != resp_match_value)" will never execute, So doing "i--"
inside of while() loop solves this problem.

Signed-off-by: Pragnesh Patel <pragnesh.patel@sifive.com>
Reviewed-by: Bin Meng <bin.meng@windriver.com>
Tested-by: Bin Meng <bin.meng@windriver.com>
This commit is contained in:
Pragnesh Patel 2020-06-29 15:17:24 +05:30 committed by Peng Fan
parent 497c7598c4
commit 3ba1d53c42
1 changed files with 3 additions and 1 deletions
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4
drivers/mmc/mmc_spi.c
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@ -105,12 +105,14 @@ static int mmc_spi_sendcmd(struct udevice *dev,
if (resp_match) {
r = ~resp_match_value;
i = CMD_TIMEOUT;
while (i--) {
while (i) {
ret = dm_spi_xfer(dev, 1 * 8, NULL, &r, 0);
if (ret)
return ret;
debug(" resp%d=0x%x", rpos, r);
rpos++;
i--;
if (r == resp_match_value)
break;
}