gpio: stmpe: Check return value of stmpe_reg_read in stmpe_gpio_irq_sync_unlock

The stmpe_reg_read function can fail, but its return value is not checked
in stmpe_gpio_irq_sync_unlock. This can lead to silent failures and
incorrect behavior if the hardware access fails.

This patch adds checks for the return value of stmpe_reg_read. If the
function fails, an error message is logged and the function returns
early to avoid further issues.

Fixes: b888fb6f2a27 ("gpio: stmpe: i2c transfer are forbiden in atomic context")
Cc: [email protected] # 4.16+
Signed-off-by: Wentao Liang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Bartosz Golaszewski <[email protected]>

0 files changed, 0 insertions, 0 deletions