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i2c: mux: pca954x: Return error if irq_create_mapping fails 

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>
This commit is contained in:
Phil Reid 2017-08-24 17:31:06 +08:00 committed by Wolfram Sang
parent 148baf1ddf
commit e460617e85
1 changed files with 4 additions and 0 deletions
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4
drivers/i2c/muxes/i2c-mux-pca954x.c
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@ -277,6 +277,10 @@ static int pca954x_irq_setup(struct i2c_mux_core *muxc)
for (c = 0; c < data->chip->nchans; c++) { for (c = 0; c < data->chip->nchans; c++) {
irq = irq_create_mapping(data->irq, 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_data(irq, data);
irq_set_chip_and_handler(irq, &pca954x_irq_chip, irq_set_chip_and_handler(irq, &pca954x_irq_chip,
handle_simple_irq); handle_simple_irq);