6.6-stable review patch. If anyone has any objections, please let me know.
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From: Hayes Wang hayeswang@realtek.com
[ Upstream commit 8487b4af59d4d7feda4b119dc2d92c67ca25c27e ]
generic_ocp_write() asks the parameter "size" must be 4 bytes align. Therefore, write the bp would fail, if the mac->bp_num is odd. Align the size to 4 for fixing it. The way may write an extra bp, but the rtl8152_is_fw_mac_ok() makes sure the value must be 0 for the bp whose index is more than mac->bp_num. That is, there is no influence for the firmware.
Besides, I check the return value of generic_ocp_write() to make sure everything is correct.
Fixes: e5c266a61186 ("r8152: set bp in bulk") Signed-off-by: Hayes Wang hayeswang@realtek.com Link: https://patch.msgid.link/20240903063333.4502-1-hayeswang@realtek.com Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/usb/r8152.c | 17 +++++++++++++---- 1 file changed, 13 insertions(+), 4 deletions(-)
diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c index 127b34dcc5b3..ce19ebd180f1 100644 --- a/drivers/net/usb/r8152.c +++ b/drivers/net/usb/r8152.c @@ -5143,14 +5143,23 @@ static void rtl8152_fw_mac_apply(struct r8152 *tp, struct fw_mac *mac) data = (u8 *)mac; data += __le16_to_cpu(mac->fw_offset);
- generic_ocp_write(tp, __le16_to_cpu(mac->fw_reg), 0xff, length, data, - type); + if (generic_ocp_write(tp, __le16_to_cpu(mac->fw_reg), 0xff, length, + data, type) < 0) { + dev_err(&tp->intf->dev, "Write %s fw fail\n", + type ? "PLA" : "USB"); + return; + }
ocp_write_word(tp, type, __le16_to_cpu(mac->bp_ba_addr), __le16_to_cpu(mac->bp_ba_value));
- generic_ocp_write(tp, __le16_to_cpu(mac->bp_start), BYTE_EN_DWORD, - __le16_to_cpu(mac->bp_num) << 1, mac->bp, type); + if (generic_ocp_write(tp, __le16_to_cpu(mac->bp_start), BYTE_EN_DWORD, + ALIGN(__le16_to_cpu(mac->bp_num) << 1, 4), + mac->bp, type) < 0) { + dev_err(&tp->intf->dev, "Write %s bp fail\n", + type ? "PLA" : "USB"); + return; + }
bp_en_addr = __le16_to_cpu(mac->bp_en_addr); if (bp_en_addr)