From: Colin King <colin.king@canonical.com> To: Jaroslav Kysela <perex@perex.cz>, Takashi Iwai <tiwai@suse.com>, alsa-devel@alsa-project.org Cc: kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] ALSA: cs4236: fix return check from call to pnp_port_start Date: Wed, 10 Oct 2018 15:15:42 +0100 [thread overview] Message-ID: <20181010141542.16100-1-colin.king@canonical.com> (raw) From: Colin Ian King <colin.king@canonical.com> Currently the return from pnp_port_start is being checked for validity by checking if it is greater or equal to zero, however, the return is unsigned and hence this check is always true. An 0 return from pnp_port_start is actually an error, so fix the check by checking for validity when it is non-zero. Detected by CoverityScan, CID#1468334 ("Unsigned compared to 0") Fixes: a9824c868a2c ("[ALSA] Add CS4232 PnP BIOS support") Signed-off-by: Colin Ian King <colin.king@canonical.com> --- sound/isa/cs423x/cs4236.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sound/isa/cs423x/cs4236.c b/sound/isa/cs423x/cs4236.c index 70559e59d18f..2211c39d2c18 100644 --- a/sound/isa/cs423x/cs4236.c +++ b/sound/isa/cs423x/cs4236.c @@ -292,7 +292,7 @@ static int snd_cs423x_pnp_init_mpu(int dev, struct pnp_dev *pdev) mpu_irq[dev] = SNDRV_AUTO_IRQ; } else { mpu_port[dev] = pnp_port_start(pdev, 0); - if (mpu_irq[dev] >= 0 && + if (!mpu_irq[dev] && pnp_irq_valid(pdev, 0) && pnp_irq(pdev, 0) >= 0) { mpu_irq[dev] = pnp_irq(pdev, 0); } else { -- 2.17.1
WARNING: multiple messages have this Message-ID (diff)
From: Colin King <colin.king@canonical.com> To: Jaroslav Kysela <perex@perex.cz>, Takashi Iwai <tiwai@suse.com>, alsa-devel@alsa-project.org Cc: kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] ALSA: cs4236: fix return check from call to pnp_port_start Date: Wed, 10 Oct 2018 14:15:42 +0000 [thread overview] Message-ID: <20181010141542.16100-1-colin.king@canonical.com> (raw) From: Colin Ian King <colin.king@canonical.com> Currently the return from pnp_port_start is being checked for validity by checking if it is greater or equal to zero, however, the return is unsigned and hence this check is always true. An 0 return from pnp_port_start is actually an error, so fix the check by checking for validity when it is non-zero. Detected by CoverityScan, CID#1468334 ("Unsigned compared to 0") Fixes: a9824c868a2c ("[ALSA] Add CS4232 PnP BIOS support") Signed-off-by: Colin Ian King <colin.king@canonical.com> --- sound/isa/cs423x/cs4236.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sound/isa/cs423x/cs4236.c b/sound/isa/cs423x/cs4236.c index 70559e59d18f..2211c39d2c18 100644 --- a/sound/isa/cs423x/cs4236.c +++ b/sound/isa/cs423x/cs4236.c @@ -292,7 +292,7 @@ static int snd_cs423x_pnp_init_mpu(int dev, struct pnp_dev *pdev) mpu_irq[dev] = SNDRV_AUTO_IRQ; } else { mpu_port[dev] = pnp_port_start(pdev, 0); - if (mpu_irq[dev] >= 0 && + if (!mpu_irq[dev] && pnp_irq_valid(pdev, 0) && pnp_irq(pdev, 0) >= 0) { mpu_irq[dev] = pnp_irq(pdev, 0); } else { -- 2.17.1
next reply other threads:[~2018-10-10 14:15 UTC|newest] Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top 2018-10-10 14:15 Colin King [this message] 2018-10-10 14:15 ` [PATCH] ALSA: cs4236: fix return check from call to pnp_port_start Colin King 2018-10-11 15:42 ` Takashi Iwai 2018-10-11 15:42 ` Takashi Iwai 2018-10-11 15:42 ` Takashi Iwai 2018-10-11 15:47 ` Colin Ian King 2018-10-11 15:47 ` Colin Ian King
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