Messages in this thread Patch in this message | | | From | Krzysztof Wilczynski <> | Subject | [PATCH] mISDN: Ignore return value of driver_for_each_device in function hfcpci_softirq. | Date | Wed, 25 Apr 2012 00:13:50 +0100 |
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Function hfcpci_softirq uses driver_for_each_device to call _hfcpci_softirq for each device. Given that _hfcpci_softirq always returns 0, we collect this return value and simply do nothing with it. This is purely to address the following warning during compilation time:
drivers/isdn/hardware/mISDN/hfcpci.c: In function ‘hfcpci_softirq’: drivers/isdn/hardware/mISDN/hfcpci.c:2319: warning: ignoring return value of ‘driver_for_each_device’, declared with attribute warn_unused_result
Similar approach was used in function cx18_alsa_exit from "cx18-alsa-main.c".
Signed-off-by: Krzysztof Wilczynski <krzysztof.wilczynski@linux.com> --- drivers/isdn/hardware/mISDN/hfcpci.c | 7 +++++-- 1 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/isdn/hardware/mISDN/hfcpci.c b/drivers/isdn/hardware/mISDN/hfcpci.c index e2c83a2..f0d0180 100644 --- a/drivers/isdn/hardware/mISDN/hfcpci.c +++ b/drivers/isdn/hardware/mISDN/hfcpci.c @@ -2316,8 +2316,11 @@ _hfcpci_softirq(struct device *dev, void *arg) static void hfcpci_softirq(void *arg) { - (void) driver_for_each_device(&hfc_driver.driver, NULL, arg, - _hfcpci_softirq); + int ret; + + /* Collect return value, but do not use it; suppress GCC warning ... */ + ret = driver_for_each_device(&hfc_driver.driver, NULL, arg, + _hfcpci_softirq); /* if next event would be in the past ... */ if ((s32)(hfc_jiffies + tics - jiffies) <= 0) -- 1.7.2.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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