From: Maxim Kochetkov <fido_max@inbox.ru>
To: Qiang Zhao <qiang.zhao@nxp.com>, Li Yang <leoyang.li@nxp.com>,
Maxim Kochetkov <fido_max@inbox.ru>,
Saravana Kannan <saravanak@google.com>
Cc: linuxppc-dev@lists.ozlabs.org,
linux-arm-kernel@lists.infradead.org,
Dan Carpenter <dan.carpenter@oracle.com>,
linux-kernel@vger.kernel.org
Subject: [PATCH] soc: fsl: qe: fix static checker warning
Date: Wed, 11 Aug 2021 10:10:36 +0300 [thread overview]
Message-ID: <20210811071036.44658-1-fido_max@inbox.ru> (raw)
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>
---
drivers/soc/fsl/qe/qe_ic.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/drivers/soc/fsl/qe/qe_ic.c b/drivers/soc/fsl/qe/qe_ic.c
index e710d554425d..bff34ee2150a 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;
};
/*
@@ -435,9 +435,8 @@ 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) {
low_handler = qe_ic_cascade_low;
@@ -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);
}
--
2.31.1
next reply other threads:[~2021-08-11 7:09 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-11 7:10 Maxim Kochetkov [this message]
2021-08-13 21:39 ` [PATCH] soc: fsl: qe: fix static checker warning Li Yang
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