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r8152: fix the firmware doesn't work

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[ Upstream commit 8487b4af59 ]

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: e5c266a611 ("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>
This commit is contained in:
Hayes Wang 2024-09-03 14:33:33 +08:00 committed by Greg Kroah-Hartman
parent 1df42be305
commit 565eb51b3d
1 changed files with 13 additions and 4 deletions
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17
drivers/net/usb/r8152.c
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@ -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)