From: Phil Reid <preid@electromag.com.au>
Date: Thu, 24 Aug 2017 17:31:06 +0800
Subject: i2c: mux: pca954x: Return error if irq_create_mapping fails
Git-commit: e460617e85db8af533c9f70c9ab94d4fa111b379
Patch-mainline: v4.15-rc1
References: fate#326530,fate#326531,fate#326535,fate#326538,fate#326539
irq_create_mapping can return an error, report error to log and return.
Cleanup will occur in the probe function when an error is returned.
Suggested-by: Peter Rosin <peda@axentia.se>
Acked-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Phil Reid <preid@electromag.com.au>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@suse.com>
---
drivers/i2c/muxes/i2c-mux-pca954x.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/i2c/muxes/i2c-mux-pca954x.c b/drivers/i2c/muxes/i2c-mux-pca954x.c
index 14aee65298f7..2ca068d8b92d 100644
--- a/drivers/i2c/muxes/i2c-mux-pca954x.c
+++ b/drivers/i2c/muxes/i2c-mux-pca954x.c
@@ -277,6 +277,10 @@ static int pca954x_irq_setup(struct i2c_mux_core *muxc)
for (c = 0; c < data->chip->nchans; c++) {
irq = irq_create_mapping(data->irq, c);
+ if (!irq) {
+ dev_err(&client->dev, "failed irq create map\n");
+ return -EINVAL;
+ }
irq_set_chip_data(irq, data);
irq_set_chip_and_handler(irq, &pca954x_irq_chip,
handle_simple_irq);
--
2.11.0