diff mbox

rtlwifi: Fix fallback firmware loading

Message ID 87a83noaxw.fsf@turtle.gmx.de (mailing list archive)
State Changes Requested
Delegated to: Kalle Valo
Headers show

Commit Message

Sven Joachim July 29, 2017, 9:21 a.m. UTC
Commit f70e4df2 ("rtlwifi: Add code to read new versions of firmware")
added code to load an old firmware file if the new one is not
available.  Unfortunately that code is never reached because
request_firmware_nowait() does not wait for the firmware to show up
and returns 0 even if the file is not there.

Use the existing fallback mechanism introduced by commit
62009b7f ("rtlwifi: rtl8192cu: Add new firmware") instead.

Fixes: f70e4df2b384d21e36a7c30a591639592692e0ec
Cc: stable@vger.kernel.org
Signed-off-by: Sven Joachim <svenjoac@gmx.de>
---
 drivers/net/wireless/realtek/rtlwifi/rtl8723be/sw.c | 13 +++----------
 drivers/net/wireless/realtek/rtlwifi/rtl8821ae/sw.c | 13 +++----------
 2 files changed, 6 insertions(+), 20 deletions(-)

Comments

Larry Finger July 30, 2017, 11:57 p.m. UTC | #1
On 07/29/2017 04:21 AM, Sven Joachim wrote:
> Commit f70e4df2 ("rtlwifi: Add code to read new versions of firmware")
> added code to load an old firmware file if the new one is not
> available.  Unfortunately that code is never reached because
> request_firmware_nowait() does not wait for the firmware to show up
> and returns 0 even if the file is not there.
> 
> Use the existing fallback mechanism introduced by commit
> 62009b7f ("rtlwifi: rtl8192cu: Add new firmware") instead.
> 
> Fixes: f70e4df2b384d21e36a7c30a591639592692e0ec
> Cc: stable@vger.kernel.org
> Signed-off-by: Sven Joachim <svenjoac@gmx.de>

Your solution seems to be correct; however, your patch fails to apply. Make 
certain that you have the latest pull on the wireless-drivers-next repo. In 
particular, it needs commit f2764f61fa105 by Souptik Jarder, which changed the 
error return.

NACK.

Larry
diff mbox

Patch

diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8723be/sw.c b/drivers/net/wireless/realtek/rtlwifi/rtl8723be/sw.c
index f9d10f1e7cf8..1c2d5f6dd3ff 100644
--- a/drivers/net/wireless/realtek/rtlwifi/rtl8723be/sw.c
+++ b/drivers/net/wireless/realtek/rtlwifi/rtl8723be/sw.c
@@ -187,16 +187,8 @@  int rtl8723be_init_sw_vars(struct ieee80211_hw *hw)
 				      rtlpriv->io.dev, GFP_KERNEL, hw,
 				      rtl_fw_cb);
 	if (err) {
-		/* Failed to get firmware. Check if old version available */
-		fw_name = "rtlwifi/rtl8723befw.bin";
-		pr_info("Using firmware %s\n", fw_name);
-		err = request_firmware_nowait(THIS_MODULE, 1, fw_name,
-					      rtlpriv->io.dev, GFP_KERNEL, hw,
-					      rtl_fw_cb);
-		if (err) {
-			pr_err("Failed to request firmware!\n");
-			return 1;
-		}
+		pr_err("Failed to request firmware!\n");
+		return 1;
 	}
 	return 0;
 }
@@ -287,6 +279,7 @@  static const struct rtl_hal_cfg rtl8723be_hal_cfg = {
 	.bar_id = 2,
 	.write_readback = true,
 	.name = "rtl8723be_pci",
+	.alt_fw_name = "rtlwifi/rtl8723befw.bin",
 	.ops = &rtl8723be_hal_ops,
 	.mod_params = &rtl8723be_mod_params,
 	.maps[SYS_ISO_CTRL] = REG_SYS_ISO_CTRL,
diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/sw.c b/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/sw.c
index d71d2776ca03..0801576bfa89 100644
--- a/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/sw.c
+++ b/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/sw.c
@@ -214,16 +214,8 @@  int rtl8821ae_init_sw_vars(struct ieee80211_hw *hw)
 				      rtlpriv->io.dev, GFP_KERNEL, hw,
 				      rtl_fw_cb);
 	if (err) {
-		/* Failed to get firmware. Check if old version available */
-		fw_name = "rtlwifi/rtl8821aefw.bin";
-		pr_info("Using firmware %s\n", fw_name);
-		err = request_firmware_nowait(THIS_MODULE, 1, fw_name,
-					      rtlpriv->io.dev, GFP_KERNEL, hw,
-					      rtl_fw_cb);
-		if (err) {
-			pr_err("Failed to request normal firmware!\n");
-			return 1;
-		}
+		pr_err("Failed to request normal firmware!\n");
+		return 1;
 	}
 	/*load wowlan firmware*/
 	pr_info("Using firmware %s\n", wowlan_fw_name);
@@ -325,6 +317,7 @@  static const struct rtl_hal_cfg rtl8821ae_hal_cfg = {
 	.bar_id = 2,
 	.write_readback = true,
 	.name = "rtl8821ae_pci",
+	.alt_fw_name = "rtlwifi/rtl8821aefw.bin",
 	.ops = &rtl8821ae_hal_ops,
 	.mod_params = &rtl8821ae_mod_params,
 	.maps[SYS_ISO_CTRL] = REG_SYS_ISO_CTRL,