From f287eb9013ccf199cbfa4eabd80c36fedfc15a73 Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Mon, 26 Feb 2018 11:36:14 +0000 Subject: [PATCH] clocksource/drivers/fsl_ftm_timer: Fix error return checking 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 Signed-off-by: Thomas Gleixner Cc: Daniel Lezcano Cc: kernel-janitors@vger.kernel.org Link: https://lkml.kernel.org/r/20180226113614.3092-1-colin.king@canonical.com --- drivers/clocksource/fsl_ftm_timer.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/clocksource/fsl_ftm_timer.c b/drivers/clocksource/fsl_ftm_timer.c index 3ee7e6fea621..846d18daf893 100644 --- 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 device_node *np, char *cnt_name, 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)