git/linux-nf
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf.git synced 2026-04-05 00:08:32 -04:00
Code Issues Packages Projects Releases Wiki Activity

crypto: qat - fix warning on adf_pfvf_pf_proto.c

Browse Source 
Building the QAT driver with -Wmaybe-uninitialized triggers warnings in
qat_common/adf_pfvf_pf_proto.c. Specifically, the variables blk_type,
blk_byte, and byte_max may be used uninitialized in handle_blkmsg_req():

  make M=drivers/crypto/intel/qat W=1 C=2 "KCFLAGS=-Werror" \
       KBUILD_CFLAGS_KERNEL=-Wmaybe-uninitialized           \
       CFLAGS_MODULE=-Wmaybe-uninitialized

  ...
  warning: ‘byte_max’ may be used uninitialized [-Wmaybe-uninitialized]
  warning: ‘blk_type’ may be used uninitialized [-Wmaybe-uninitialized]
  warning: ‘blk_byte’ may be used uninitialized [-Wmaybe-uninitialized]

Although the caller of handle_blkmsg_req() always provides a req.type
that is handled by the switch, the compiler cannot guarantee this.

Add a default case to the switch statement to handle an invalid req.type.

Fixes: 673184a2a5 ("crypto: qat - introduce support for PFVF block messages")
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Reviewed-by: Ahsan Atta <ahsan.atta@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Giovanni Cabiddu
2025-11-20 16:30:46 +00:00
committed by Herbert Xu
parent 90ca8d3596
commit 994689b8f9
1 changed files with 10 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/crypto/intel/qat/qat_common/adf_pfvf_pf_proto.c
View File

@@ -148,6 +148,16 @@ static struct pfvf_message handle_blkmsg_req(struct adf_accel_vf_info *vf_info,
blk_byte = FIELD_GET(ADF_VF2PF_SMALL_BLOCK_BYTE_MASK, req.data);
byte_max = ADF_VF2PF_SMALL_BLOCK_BYTE_MAX;
break;
default:
dev_err(&GET_DEV(vf_info->accel_dev),
"Invalid BlockMsg type 0x%.4x received from VF%u\n",
req.type, vf_info->vf_nr);
resp.type = ADF_PF2VF_MSGTYPE_BLKMSG_RESP;
resp.data = FIELD_PREP(ADF_PF2VF_BLKMSG_RESP_TYPE_MASK,
ADF_PF2VF_BLKMSG_RESP_TYPE_ERROR) |
FIELD_PREP(ADF_PF2VF_BLKMSG_RESP_DATA_MASK,
ADF_PF2VF_UNSPECIFIED_ERROR);
return resp;
}
/* Is this a request for CRC or data? */