| Message ID | 20210914141349.30218-1-ckeepax@opensource.cirrus.com (mailing list archive) |
|---|---|
| State | Accepted |
| Commit | c2f14cc2bcdd532f8a18450407ffc27bbbff2319 |
| Headers | show |
| Series | [1/6] ASoC: cs35l41: Fix use of an uninitialised variable | expand |
On Tue, 14 Sep 2021 15:13:44 +0100, Charles Keepax wrote: > The loop checking PDN_DONE doesn't check the return value from > regmap_read, nor does it initialise val. This means if regmap_read fails > val will be checked for the PDN_DONE bit whilst being uninitialised. > > Fix this up by switching to regmap_read_poll_timeout which tidies up the > code and avoids the uninitialised variable. > > [...] Applied to https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next Thanks! [1/6] ASoC: cs35l41: Fix use of an uninitialised variable commit: c2f14cc2bcdd532f8a18450407ffc27bbbff2319 [2/6] ASoC: cs35l41: Use regmap_read_poll_timeout to wait for OTP boot commit: 3a2eb0b4b02060340af10a1db3c452472471be2f [3/6] ASoC: cs35l41: Combine adjacent register writes commit: fe1024d50477becf35128f3ef03bf3525a2cd140 [4/6] ASoC: cs35l41: Don't overwrite returned error code commit: e371eadf2a93a653211331b66beaac3b1bcbc931 [5/6] ASoC: cs35l41: Fixup the error messages commit: 3e60abeb5cb51bccc8bcc6808eef2037ab412334 [6/6] ASoC: cs35l41: Fix a bunch of trivial code formating/style issues commit: 4295c8cc17481e0d7d4c3a404eaf87dc8dfc26be All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted. You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed. If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced. Please add any relevant lists and maintainers to the CCs when replying to this mail. Thanks, Mark
diff --git a/sound/soc/codecs/cs35l41.c b/sound/soc/codecs/cs35l41.c index dbec54a28a9e3..d2a11cc336833 100644 --- a/sound/soc/codecs/cs35l41.c +++ b/sound/soc/codecs/cs35l41.c @@ -580,7 +580,6 @@ static int cs35l41_main_amp_event(struct snd_soc_dapm_widget *w, unsigned int val; int ret = 0; bool pdn; - int i; switch (event) { case SND_SOC_DAPM_POST_PMU: @@ -599,19 +598,11 @@ static int cs35l41_main_amp_event(struct snd_soc_dapm_widget *w, CS35L41_GLOBAL_EN_MASK, 0); pdn = false; - for (i = 0; i < 100; i++) { - regmap_read(cs35l41->regmap, - CS35L41_IRQ1_STATUS1, - &val); - if (val & CS35L41_PDN_DONE_MASK) { - pdn = true; - break; - } - usleep_range(1000, 1100); - } - - if (!pdn) - dev_warn(cs35l41->dev, "PDN failed\n"); + ret = regmap_read_poll_timeout(cs35l41->regmap, CS35L41_IRQ1_STATUS1, + val, val & CS35L41_PDN_DONE_MASK, + 1000, 100000); + if (ret) + dev_warn(cs35l41->dev, "PDN failed: %d\n", ret); regmap_write(cs35l41->regmap, CS35L41_IRQ1_STATUS1, CS35L41_PDN_DONE_MASK);
The loop checking PDN_DONE doesn't check the return value from regmap_read, nor does it initialise val. This means if regmap_read fails val will be checked for the PDN_DONE bit whilst being uninitialised. Fix this up by switching to regmap_read_poll_timeout which tidies up the code and avoids the uninitialised variable. Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com> --- sound/soc/codecs/cs35l41.c | 19 +++++-------------- 1 file changed, 5 insertions(+), 14 deletions(-)