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mac80211: ath9k: handle error from copy_to_user in read_file_eeprom
Handle error from copy_to_user in read_file_eeprom. Fix compilarion warning: /__w/openwrt/openwrt/openwrt/build_dir/target-x86_64-openwrt-linux-musl_musl/linux-x86_64/backports-6.1.24/drivers/net/wireless/ath/ath9k/debug.c: In function 'read_file_eeprom': /__w/openwrt/openwrt/openwrt/build_dir/target-x86_64-openwrt-linux-musl_musl/linux-x86_64/backports-6.1.24/drivers/net/wireless/ath/ath9k/debug.c:1451:17: error: ignoring return value of 'copy_to_user' declared with attribute 'warn_unused_result' [-Werror=unused-result] 1451 | copy_to_user(user_buf, from, bytes); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
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@ -1,6 +1,6 @@
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--- a/drivers/net/wireless/ath/ath9k/debug.c
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+++ b/drivers/net/wireless/ath/ath9k/debug.c
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@@ -1413,6 +1413,53 @@ void ath9k_deinit_debug(struct ath_softc
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@@ -1413,6 +1413,54 @@ void ath9k_deinit_debug(struct ath_softc
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ath9k_cmn_spectral_deinit_debug(&sc->spec_priv);
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}
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@ -39,7 +39,8 @@
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+ } else {
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+ bytes = 2;
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+ }
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+ copy_to_user(user_buf, from, bytes);
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+ if (copy_to_user(user_buf, from, bytes))
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+ return -EFAULT;
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+ user_buf += bytes;
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+ }
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+ return *ppos - pos;
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