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* [PATCH v2] Bluetooth: btrtl: Fix an issue that failing to download the FW which size is over 32K bytes
@ 2019-09-05  5:21 max.chou
  2019-09-05 15:29 ` Marcel Holtmann
  0 siblings, 1 reply; 2+ messages in thread
From: max.chou @ 2019-09-05  5:21 UTC (permalink / raw)
  To: marcel, johan.hedberg, linux-bluetooth, linux-kernel; +Cc: alex_lu, max.chou

From: Max Chou <max.chou@realtek.com>

Fix the issue that when the FW size is 32K+, it will fail for the download
process because of the incorrect index.

When firmware patch length is over 32K, "dl_cmd->index" may >= 0x80. It
will be thought as "data end" that download process will not complete.
However, driver should recount the index from 1.

Signed-off-by: Max Chou <max.chou@realtek.com>
---
Changes in v2:
- Added the comment for commit message
- Remove the extra variable

 drivers/bluetooth/btrtl.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/bluetooth/btrtl.c b/drivers/bluetooth/btrtl.c
index 0354e93e7a7c..bf3c02be6930 100644
--- a/drivers/bluetooth/btrtl.c
+++ b/drivers/bluetooth/btrtl.c
@@ -401,7 +401,11 @@ static int rtl_download_firmware(struct hci_dev *hdev,
 
 		BT_DBG("download fw (%d/%d)", i, frag_num);
 
-		dl_cmd->index = i;
+		if (i > 0x7f)
+			dl_cmd->index = (i & 0x7f) + 1;
+		else
+			dl_cmd->index = i;
+
 		if (i == (frag_num - 1)) {
 			dl_cmd->index |= 0x80; /* data end */
 			frag_len = fw_len % RTL_FRAG_LEN;
-- 
2.17.1


^ permalink raw reply	[flat|nested] 2+ messages in thread

* Re: [PATCH v2] Bluetooth: btrtl: Fix an issue that failing to download the FW which size is over 32K bytes
  2019-09-05  5:21 [PATCH v2] Bluetooth: btrtl: Fix an issue that failing to download the FW which size is over 32K bytes max.chou
@ 2019-09-05 15:29 ` Marcel Holtmann
  0 siblings, 0 replies; 2+ messages in thread
From: Marcel Holtmann @ 2019-09-05 15:29 UTC (permalink / raw)
  To: Max Chou; +Cc: Johan Hedberg, linux-bluetooth, LKML, alex_lu

Hi Max,

> Fix the issue that when the FW size is 32K+, it will fail for the download
> process because of the incorrect index.
> 
> When firmware patch length is over 32K, "dl_cmd->index" may >= 0x80. It
> will be thought as "data end" that download process will not complete.
> However, driver should recount the index from 1.
> 
> Signed-off-by: Max Chou <max.chou@realtek.com>
> ---
> Changes in v2:
> - Added the comment for commit message
> - Remove the extra variable
> 
> drivers/bluetooth/btrtl.c | 6 +++++-
> 1 file changed, 5 insertions(+), 1 deletion(-)

patch has been applied to bluetooth-next tree.

Regards

Marcel


^ permalink raw reply	[flat|nested] 2+ messages in thread

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2019-09-05  5:21 [PATCH v2] Bluetooth: btrtl: Fix an issue that failing to download the FW which size is over 32K bytes max.chou
2019-09-05 15:29 ` Marcel Holtmann

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