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| author | Zhen Lei <thunder.leizhen@huawei.com> | 2022-11-30 21:49:20 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-12-31 13:32:25 +0100 |
| commit | 5aebe9ba130a38db914347a397190a8405ae7671 (patch) | |
| tree | 2c9b3123209798e231e0212741eccd9a5fce1138 /drivers/mmc | |
| parent | 1b3f0b02486b553983c352442e20aded7458decd (diff) | |
| download | linux-5aebe9ba130a38db914347a397190a8405ae7671.tar.gz | |
mmc: core: Normalize the error handling branch in sd_read_ext_regs()
[ Upstream commit fc02e2b52389c8fde02852b2f959c0b45f042bbd ]
Let's use pr_err() to output the error messages and let's extend a comment
to clarify why returning 0 (success) in one case make sense.
Fixes: c784f92769ae ("mmc: core: Read the SD function extension registers for power management")
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
[Ulf: Clarified the comment and the commit-msg]
Link: https://lore.kernel.org/r/20221130134920.2109-1-thunder.leizhen@huawei.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/core/sd.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c index 3662bf5320ce..72b664ed90cf 100644 --- a/drivers/mmc/core/sd.c +++ b/drivers/mmc/core/sd.c @@ -1259,7 +1259,7 @@ static int sd_read_ext_regs(struct mmc_card *card) */ err = sd_read_ext_reg(card, 0, 0, 0, 512, gen_info_buf); if (err) { - pr_warn("%s: error %d reading general info of SD ext reg\n", + pr_err("%s: error %d reading general info of SD ext reg\n", mmc_hostname(card->host), err); goto out; } @@ -1273,7 +1273,12 @@ static int sd_read_ext_regs(struct mmc_card *card) /* Number of extensions to be find. */ num_ext = gen_info_buf[4]; - /* We support revision 0, but limit it to 512 bytes for simplicity. */ + /* + * We only support revision 0 and limit it to 512 bytes for simplicity. + * No matter what, let's return zero to allow us to continue using the + * card, even if we can't support the features from the SD function + * extensions registers. + */ if (rev != 0 || len > 512) { pr_warn("%s: non-supported SD ext reg layout\n", mmc_hostname(card->host)); @@ -1288,7 +1293,7 @@ static int sd_read_ext_regs(struct mmc_card *card) for (i = 0; i < num_ext; i++) { err = sd_parse_ext_reg(card, gen_info_buf, &next_ext_addr); if (err) { - pr_warn("%s: error %d parsing SD ext reg\n", + pr_err("%s: error %d parsing SD ext reg\n", mmc_hostname(card->host), err); goto out; } |