diff options
| author | Colin Ian King <colin.king@canonical.com> | 2019-11-22 13:13:54 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-01-09 10:19:02 +0100 |
| commit | 8f093a2152ca2943d0e50febd891478e816e7c20 (patch) | |
| tree | 16b50ded0fb3bfae98e9f3560ea54f67af37637c | |
| parent | f3248d6dce684a98641bd69e14a5efc8dc4b4593 (diff) | |
ALSA: cs4236: fix error return comparison of an unsigned integer
commit d60229d84846a8399257006af9c5444599f64361 upstream.
The return from pnp_irq is an unsigned integer type resource_size_t
and hence the error check for a positive non-error code is always
going to be true. A check for a non-failure return from pnp_irq
should in fact be for (resource_size_t)-1 rather than >= 0.
Addresses-Coverity: ("Unsigned compared against 0")
Fixes: a9824c868a2c ("[ALSA] Add CS4232 PnP BIOS support")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20191122131354.58042-1-colin.king@canonical.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | sound/isa/cs423x/cs4236.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sound/isa/cs423x/cs4236.c b/sound/isa/cs423x/cs4236.c index 70559e59d18f..7d4e18cb6351 100644 --- a/sound/isa/cs423x/cs4236.c +++ b/sound/isa/cs423x/cs4236.c @@ -293,7 +293,8 @@ static int snd_cs423x_pnp_init_mpu(int dev, struct pnp_dev *pdev) } else { mpu_port[dev] = pnp_port_start(pdev, 0); if (mpu_irq[dev] >= 0 && - pnp_irq_valid(pdev, 0) && pnp_irq(pdev, 0) >= 0) { + pnp_irq_valid(pdev, 0) && + pnp_irq(pdev, 0) != (resource_size_t)-1) { mpu_irq[dev] = pnp_irq(pdev, 0); } else { mpu_irq[dev] = -1; /* disable interrupt */ |