4.14-stable review patch. If anyone has any objections, please let me know.
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From: Colin Ian King colin.king@canonical.com
[ Upstream commit f287eb9013ccf199cbfa4eabd80c36fedfc15a73 ]
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: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- 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 @@ -281,7 +281,7 @@ 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)