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Message-ID: <1487706426-31172-1-git-send-email-kvalo@qca.qualcomm.com>
Date: Tue, 21 Feb 2017 21:47:06 +0200
From: Kalle Valo <kvalo@....qualcomm.com>
To: <netdev@...r.kernel.org>
CC: <linux-wireless@...r.kernel.org>, <ath10k@...ts.infradead.org>
Subject: [PATCH] Revert "ath10k: Search SMBIOS for OEM board file extension"
This reverts commit f2593cb1b29185d38db706cbcbe22ed538720ae1.
Paul reported that this patch with older board-2.bin ath10k initialisation
fails on Dell XPS 13:
ath10k_pci 0000:3a:00.0: failed to fetch board data for bus=pci,vendor=168c,
device=003e,subsystem-vendor=1a56,subsystem-device=1535,variant=RV_0520 from
ath10k/QCA6174/hw3.0/board-2.bin
The reason is that the older board-2.bin does not have the variant version of
the image name and ath10k does not fallback to the older naming scheme.
Reported-by: Paul Menzel <pmenzel@...gen.mpg.de>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=185621#c9
Fixes: f2593cb1b291 ("ath10k: Search SMBIOS for OEM board file extension")
Signed-off-by: Kalle Valo <kvalo@....qualcomm.com>
---
Dave, please take this directly if you can.
drivers/net/wireless/ath/ath10k/core.c | 84 ++--------------------------------
drivers/net/wireless/ath/ath10k/core.h | 19 --------
2 files changed, 3 insertions(+), 100 deletions(-)
diff --git a/drivers/net/wireless/ath/ath10k/core.c b/drivers/net/wireless/ath/ath10k/core.c
index 59729aa8cd82..dd902b43f8f7 100644
--- a/drivers/net/wireless/ath/ath10k/core.c
+++ b/drivers/net/wireless/ath/ath10k/core.c
@@ -18,8 +18,6 @@
#include <linux/module.h>
#include <linux/firmware.h>
#include <linux/of.h>
-#include <linux/dmi.h>
-#include <linux/ctype.h>
#include <asm/byteorder.h>
#include "core.h"
@@ -713,72 +711,6 @@ static int ath10k_core_get_board_id_from_otp(struct ath10k *ar)
return 0;
}
-static void ath10k_core_check_bdfext(const struct dmi_header *hdr, void *data)
-{
- struct ath10k *ar = data;
- const char *bdf_ext;
- const char *magic = ATH10K_SMBIOS_BDF_EXT_MAGIC;
- u8 bdf_enabled;
- int i;
-
- if (hdr->type != ATH10K_SMBIOS_BDF_EXT_TYPE)
- return;
-
- if (hdr->length != ATH10K_SMBIOS_BDF_EXT_LENGTH) {
- ath10k_dbg(ar, ATH10K_DBG_BOOT,
- "wrong smbios bdf ext type length (%d).\n",
- hdr->length);
- return;
- }
-
- bdf_enabled = *((u8 *)hdr + ATH10K_SMBIOS_BDF_EXT_OFFSET);
- if (!bdf_enabled) {
- ath10k_dbg(ar, ATH10K_DBG_BOOT, "bdf variant name not found.\n");
- return;
- }
-
- /* Only one string exists (per spec) */
- bdf_ext = (char *)hdr + hdr->length;
-
- if (memcmp(bdf_ext, magic, strlen(magic)) != 0) {
- ath10k_dbg(ar, ATH10K_DBG_BOOT,
- "bdf variant magic does not match.\n");
- return;
- }
-
- for (i = 0; i < strlen(bdf_ext); i++) {
- if (!isascii(bdf_ext[i]) || !isprint(bdf_ext[i])) {
- ath10k_dbg(ar, ATH10K_DBG_BOOT,
- "bdf variant name contains non ascii chars.\n");
- return;
- }
- }
-
- /* Copy extension name without magic suffix */
- if (strscpy(ar->id.bdf_ext, bdf_ext + strlen(magic),
- sizeof(ar->id.bdf_ext)) < 0) {
- ath10k_dbg(ar, ATH10K_DBG_BOOT,
- "bdf variant string is longer than the buffer can accommodate (variant: %s)\n",
- bdf_ext);
- return;
- }
-
- ath10k_dbg(ar, ATH10K_DBG_BOOT,
- "found and validated bdf variant smbios_type 0x%x bdf %s\n",
- ATH10K_SMBIOS_BDF_EXT_TYPE, bdf_ext);
-}
-
-static int ath10k_core_check_smbios(struct ath10k *ar)
-{
- ar->id.bdf_ext[0] = '\0';
- dmi_walk(ath10k_core_check_bdfext, ar);
-
- if (ar->id.bdf_ext[0] == '\0')
- return -ENODATA;
-
- return 0;
-}
-
static int ath10k_download_and_run_otp(struct ath10k *ar)
{
u32 result, address = ar->hw_params.patch_load_addr;
@@ -1125,9 +1057,6 @@ static int ath10k_core_fetch_board_data_api_n(struct ath10k *ar,
static int ath10k_core_create_board_name(struct ath10k *ar, char *name,
size_t name_len)
{
- /* strlen(',variant=') + strlen(ar->id.bdf_ext) */
- char variant[9 + ATH10K_SMBIOS_BDF_EXT_STR_LENGTH] = { 0 };
-
if (ar->id.bmi_ids_valid) {
scnprintf(name, name_len,
"bus=%s,bmi-chip-id=%d,bmi-board-id=%d",
@@ -1137,15 +1066,12 @@ static int ath10k_core_create_board_name(struct ath10k *ar, char *name,
goto out;
}
- if (ar->id.bdf_ext[0] != '\0')
- scnprintf(variant, sizeof(variant), ",variant=%s",
- ar->id.bdf_ext);
-
scnprintf(name, name_len,
- "bus=%s,vendor=%04x,device=%04x,subsystem-vendor=%04x,subsystem-device=%04x%s",
+ "bus=%s,vendor=%04x,device=%04x,subsystem-vendor=%04x,subsystem-device=%04x",
ath10k_bus_str(ar->hif.bus),
ar->id.vendor, ar->id.device,
- ar->id.subsystem_vendor, ar->id.subsystem_device, variant);
+ ar->id.subsystem_vendor, ar->id.subsystem_device);
+
out:
ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot using board name '%s'\n", name);
@@ -2202,10 +2128,6 @@ static int ath10k_core_probe_fw(struct ath10k *ar)
goto err_free_firmware_files;
}
- ret = ath10k_core_check_smbios(ar);
- if (ret)
- ath10k_dbg(ar, ATH10K_DBG_BOOT, "bdf variant name not set.\n");
-
ret = ath10k_core_fetch_board_file(ar);
if (ret) {
ath10k_err(ar, "failed to fetch board file: %d\n", ret);
diff --git a/drivers/net/wireless/ath/ath10k/core.h b/drivers/net/wireless/ath/ath10k/core.h
index 88d14be7fcce..757242ef52ac 100644
--- a/drivers/net/wireless/ath/ath10k/core.h
+++ b/drivers/net/wireless/ath/ath10k/core.h
@@ -69,23 +69,6 @@
#define ATH10K_NAPI_BUDGET 64
#define ATH10K_NAPI_QUOTA_LIMIT 60
-/* SMBIOS type containing Board Data File Name Extension */
-#define ATH10K_SMBIOS_BDF_EXT_TYPE 0xF8
-
-/* SMBIOS type structure length (excluding strings-set) */
-#define ATH10K_SMBIOS_BDF_EXT_LENGTH 0x9
-
-/* Offset pointing to Board Data File Name Extension */
-#define ATH10K_SMBIOS_BDF_EXT_OFFSET 0x8
-
-/* Board Data File Name Extension string length.
- * String format: BDF_<Customer ID>_<Extension>\0
- */
-#define ATH10K_SMBIOS_BDF_EXT_STR_LENGTH 0x20
-
-/* The magic used by QCA spec */
-#define ATH10K_SMBIOS_BDF_EXT_MAGIC "BDF_"
-
struct ath10k;
enum ath10k_bus {
@@ -815,8 +798,6 @@ struct ath10k {
bool bmi_ids_valid;
u8 bmi_board_id;
u8 bmi_chip_id;
-
- char bdf_ext[ATH10K_SMBIOS_BDF_EXT_STR_LENGTH];
} id;
int fw_api;
--
2.7.4
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