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[4/5,v3] ASoC: intel: sst: Handle return value of platform_get_irq

Message ID ab173ba649ad4990ec95c10ccb455a495b6b8651.1511062844.git.arvind.yadav.cs@gmail.com (mailing list archive)
State New, archived
Headers show

Commit Message

Arvind Yadav Nov. 19, 2017, 4:15 a.m. UTC 
platform_get_irq() can fail here and we must check its return value.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
---
changes in v2 :
              Add failure case '<= 0' instead of '< 0'. IRQ0 is not valid.
changes in v3 :
              Return EIO insted of ctx->irq_num.

 sound/soc/intel/atom/sst/sst_acpi.c | 3 +++
 1 file changed, 3 insertions(+)
diff mbox

Patch

diff --git a/sound/soc/intel/atom/sst/sst_acpi.c b/sound/soc/intel/atom/sst/sst_acpi.c
index 32d6e02..5e46d06f 100644
--- a/sound/soc/intel/atom/sst/sst_acpi.c
+++ b/sound/soc/intel/atom/sst/sst_acpi.c
@@ -236,6 +236,9 @@  static int sst_platform_get_resources(struct intel_sst_drv *ctx)
 	/* Find the IRQ */
 	ctx->irq_num = platform_get_irq(pdev,
 				ctx->pdata->res_info->acpi_ipc_irq_index);
+	if (ctx->irq_num <= 0)
+		return -EIO;
+
 	return 0;
 }