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Revert "ath10k: add sanity check to ie_len before parsing fw/board ie" 

This reverts commit 9ed4f91628.

The commit introduced a regression that over read the ie with
the padding.

- the expected IE information

ath10k_pci 0000:03:00.0: found firmware features ie (1 B)
ath10k_pci 0000:03:00.0: Enabling feature bit: 6
ath10k_pci 0000:03:00.0: Enabling feature bit: 7
ath10k_pci 0000:03:00.0: features
ath10k_pci 0000:03:00.0: 00000000: c0 00 00 00 00 00 00 00

- the wrong IE with padding is read (0x77)

ath10k_pci 0000:03:00.0: found firmware features ie (4 B)
ath10k_pci 0000:03:00.0: Enabling feature bit: 6
ath10k_pci 0000:03:00.0: Enabling feature bit: 7
ath10k_pci 0000:03:00.0: Enabling feature bit: 8
ath10k_pci 0000:03:00.0: Enabling feature bit: 9
ath10k_pci 0000:03:00.0: Enabling feature bit: 10
ath10k_pci 0000:03:00.0: Enabling feature bit: 12
ath10k_pci 0000:03:00.0: Enabling feature bit: 13
ath10k_pci 0000:03:00.0: Enabling feature bit: 14
ath10k_pci 0000:03:00.0: Enabling feature bit: 16
ath10k_pci 0000:03:00.0: Enabling feature bit: 17
ath10k_pci 0000:03:00.0: Enabling feature bit: 18
ath10k_pci 0000:03:00.0: features
ath10k_pci 0000:03:00.0: 00000000: c0 77 07 00 00 00 00 00

Tested-by: Mike Lothian <mike@fireburn.co.uk>
Signed-off-by: Ryan Hsu <ryanhsu@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Ryan Hsu 2018-02-07 15:51:23 +02:00 committed by Kalle Valo
parent 4e12d654ba
commit 9ce8b24aa9
1 changed files with 7 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
drivers/net/wireless/ath/ath10k/core.c
View File

@ -1305,10 +1305,7 @@ static int ath10k_core_fetch_board_data_api_n(struct ath10k *ar,
len -= sizeof(*hdr);
data = hdr->data;
/* jump over the padding */
ie_len = ALIGN(ie_len, 4);
if (len < ie_len) {
if (len < ALIGN(ie_len, 4)) {
ath10k_err(ar, "invalid length for board ie_id %d ie_len %zu len %zu\n",
ie_id, ie_len, len);
ret = -EINVAL;
@ -1347,6 +1344,9 @@ static int ath10k_core_fetch_board_data_api_n(struct ath10k *ar,
goto out;
}
/* jump over the padding */
ie_len = ALIGN(ie_len, 4);
len -= ie_len;
data += ie_len;
}
@ -1477,9 +1477,6 @@ int ath10k_core_fetch_firmware_api_n(struct ath10k *ar, const char *name,
len -= sizeof(*hdr);
data += sizeof(*hdr);
/* jump over the padding */
ie_len = ALIGN(ie_len, 4);
if (len < ie_len) {
ath10k_err(ar, "invalid length for FW IE %d (%zu < %zu)\n",
ie_id, len, ie_len);
@ -1585,6 +1582,9 @@ int ath10k_core_fetch_firmware_api_n(struct ath10k *ar, const char *name,
break;
}
/* jump over the padding */
ie_len = ALIGN(ie_len, 4);
len -= ie_len;
data += ie_len;
}