From: Maxim Kochetkov fido_max@inbox.ru
[ Upstream commit c1e64c0aec8cb0499e61af7ea086b59abba97945 ]
The patch be7ecbd240b2: "soc: fsl: qe: convert QE interrupt controller to platform_device" from Aug 3, 2021, leads to the following static checker warning:
drivers/soc/fsl/qe/qe_ic.c:438 qe_ic_init() warn: unsigned 'qe_ic->virq_low' is never less than zero.
In old variant irq_of_parse_and_map() returns zero if failed so unsigned int for virq_high/virq_low was ok. In new variant platform_get_irq() returns negative error codes if failed so we need to use int for virq_high/virq_low.
Also simplify high_handler checking and remove the curly braces to make checkpatch happy.
Fixes: be7ecbd240b2 ("soc: fsl: qe: convert QE interrupt controller to platform_device") Signed-off-by: Maxim Kochetkov fido_max@inbox.ru Reported-by: Dan Carpenter dan.carpenter@oracle.com Signed-off-by: Li Yang leoyang.li@nxp.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/soc/fsl/qe/qe_ic.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-)
diff --git a/drivers/soc/fsl/qe/qe_ic.c b/drivers/soc/fsl/qe/qe_ic.c index e710d554425d..bbae3d39c7be 100644 --- a/drivers/soc/fsl/qe/qe_ic.c +++ b/drivers/soc/fsl/qe/qe_ic.c @@ -54,8 +54,8 @@ struct qe_ic { struct irq_chip hc_irq;
/* VIRQ numbers of QE high/low irqs */ - unsigned int virq_high; - unsigned int virq_low; + int virq_high; + int virq_low; };
/* @@ -435,11 +435,10 @@ static int qe_ic_init(struct platform_device *pdev) qe_ic->virq_high = platform_get_irq(pdev, 0); qe_ic->virq_low = platform_get_irq(pdev, 1);
- if (qe_ic->virq_low < 0) { + if (qe_ic->virq_low <= 0) return -ENODEV; - }
- if (qe_ic->virq_high != qe_ic->virq_low) { + if (qe_ic->virq_high > 0 && qe_ic->virq_high != qe_ic->virq_low) { low_handler = qe_ic_cascade_low; high_handler = qe_ic_cascade_high; } else { @@ -459,7 +458,7 @@ static int qe_ic_init(struct platform_device *pdev) irq_set_handler_data(qe_ic->virq_low, qe_ic); irq_set_chained_handler(qe_ic->virq_low, low_handler);
- if (qe_ic->virq_high && qe_ic->virq_high != qe_ic->virq_low) { + if (high_handler) { irq_set_handler_data(qe_ic->virq_high, qe_ic); irq_set_chained_handler(qe_ic->virq_high, high_handler); }