Messages in this thread Patch in this message | | | From | Ben Hutchings <> | Date | Thu, 07 Jun 2018 15:05:21 +0100 | Subject | [PATCH 3.16 286/410] clocksource/drivers/fsl_ftm_timer: Fix error return checking |
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3.16.57-rc1 review patch. If anyone has any objections, please let me know.
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From: Colin Ian King <colin.king@canonical.com>
commit f287eb9013ccf199cbfa4eabd80c36fedfc15a73 upstream.
The error checks on freq for a negative error return always fails because freq is unsigned and can never be negative. Fix this by making freq a signed long.
Detected with Coccinelle: drivers/clocksource/fsl_ftm_timer.c:287:5-9: WARNING: Unsigned expression compared with zero: freq <= 0 drivers/clocksource/fsl_ftm_timer.c:291:5-9: WARNING: Unsigned expression compared with zero: freq <= 0
Fixes: 2529c3a33079 ("clocksource: Add Freescale FlexTimer Module (FTM) timer support") Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: kernel-janitors@vger.kernel.org Link: https://lkml.kernel.org/r/20180226113614.3092-1-colin.king@canonical.com Signed-off-by: Ben Hutchings <ben@decadent.org.uk> --- drivers/clocksource/fsl_ftm_timer.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/clocksource/fsl_ftm_timer.c +++ b/drivers/clocksource/fsl_ftm_timer.c @@ -282,7 +282,7 @@ static int __init __ftm_clk_init(struct static unsigned long __init ftm_clk_init(struct device_node *np) { - unsigned long freq; + long freq; freq = __ftm_clk_init(np, "ftm-evt-counter-en", "ftm-evt"); if (freq <= 0)
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