Messages in this thread Patch in this message | | | From | Vinod Koul <> | Subject | [PATCH] soundwire: qcom: use signed variable for error return | Date | Wed, 31 Mar 2021 12:51:11 +0530 |
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We get warning for using a unsigned variable being compared to less than zero. The comparison is correct as it checks for errors from previous call to qcom_swrm_get_alert_slave_dev_num(), so we should use a signed variable instead.
drivers/soundwire/qcom.c: qcom_swrm_irq_handler() warn: impossible condition '(devnum < 0) => (0-255 < 0)'
Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Vinod Koul <vkoul@kernel.org> --- drivers/soundwire/qcom.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/soundwire/qcom.c b/drivers/soundwire/qcom.c index b08ecb9b418c..55ed133c6704 100644 --- a/drivers/soundwire/qcom.c +++ b/drivers/soundwire/qcom.c @@ -428,7 +428,7 @@ static irqreturn_t qcom_swrm_irq_handler(int irq, void *dev_id) struct qcom_swrm_ctrl *swrm = dev_id; u32 value, intr_sts, intr_sts_masked, slave_status; u32 i; - u8 devnum = 0; + s8 devnum = 0; int ret = IRQ_HANDLED; swrm->reg_read(swrm, SWRM_INTERRUPT_STATUS, &intr_sts); -- 2.26.3
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