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mac80211: ath9k: handle error from copy_to_user in read_file_eeprom

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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>
This commit is contained in:
Christian Marangi 2023-05-06 12:41:46 +02:00
parent 0e2a332252
commit cbf299c86c
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GPG Key ID: AC001D09ADBFEAD7
1 changed files with 3 additions and 2 deletions
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5
package/kernel/mac80211/patches/ath9k/500-ath9k_eeprom_debugfs.patch
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@ -1,6 +1,6 @@
--- a/drivers/net/wireless/ath/ath9k/debug.c
+++ b/drivers/net/wireless/ath/ath9k/debug.c
@@ -1413,6 +1413,53 @@ void ath9k_deinit_debug(struct ath_softc
@@ -1413,6 +1413,54 @@ void ath9k_deinit_debug(struct ath_softc
ath9k_cmn_spectral_deinit_debug(&sc->spec_priv);
}
@ -39,7 +39,8 @@
+ } else {
+ bytes = 2;
+ }
+ copy_to_user(user_buf, from, bytes);
+ if (copy_to_user(user_buf, from, bytes))
+ return -EFAULT;
+ user_buf += bytes;
+ }
+ return *ppos - pos;