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kernel: ltq-atm: add patch fixing compilation warning for ltq_atm

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Fix compilation warning caused by copy_from_user ret not handled.
Fix compilation warning:
/__w/openwrt/openwrt/openwrt/build_dir/target-mips-openwrt-linux-musl_musl/linux-lantiq_ase/ltq-atm-ase/ltq-atm/ltq_atm.c: In function 'ppe_ioctl':
/__w/openwrt/openwrt/openwrt/build_dir/target-mips-openwrt-linux-musl_musl/linux-lantiq_ase/ltq-atm-ase/ltq-atm/ltq_atm.c:341:17: error: ignoring return value of 'copy_from_user' declared with attribute 'warn_unused_result' [-Werror=unused-result]
  341 |                 copy_from_user(&mib_vcc, arg, sizeof(mib_vcc));
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
This commit is contained in:
Christian Marangi 2023-05-11 08:18:56 +02:00
parent f1a2744182
commit 0736cc0e67
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1 changed files with 12 additions and 0 deletions
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package/kernel/lantiq/ltq-atm/patches/100-ltq_atm-fix-compillation-warning.patch Normal file
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@ -0,0 +1,12 @@
--- a/ltq_atm.c
+++ b/ltq_atm.c
@@ -338,7 +338,8 @@ static int ppe_ioctl(struct atm_dev *dev
break;
case PPE_ATM_MIB_VCC: /* VCC related MIB */
- copy_from_user(&mib_vcc, arg, sizeof(mib_vcc));
+ if (copy_from_user(&mib_vcc, arg, sizeof(mib_vcc)))
+ return -EFAULT;
conn = find_vpivci(mib_vcc.vpi, mib_vcc.vci);
if (conn >= 0) {
mib_vcc.mib_vcc.aal5VccCrcErrors = g_atm_priv_data.conn[conn].aal5_vcc_crc_err;