forked from Openwrt/openwrt
0736cc0e67
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>
13 lines
437 B
Diff
13 lines
437 B
Diff
--- a/ltq_atm.c
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+++ b/ltq_atm.c
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@@ -338,7 +338,8 @@ static int ppe_ioctl(struct atm_dev *dev
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break;
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case PPE_ATM_MIB_VCC: /* VCC related MIB */
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- copy_from_user(&mib_vcc, arg, sizeof(mib_vcc));
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+ if (copy_from_user(&mib_vcc, arg, sizeof(mib_vcc)))
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+ return -EFAULT;
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conn = find_vpivci(mib_vcc.vpi, mib_vcc.vci);
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if (conn >= 0) {
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mib_vcc.mib_vcc.aal5VccCrcErrors = g_atm_priv_data.conn[conn].aal5_vcc_crc_err;
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