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| author | Kai-Heng Feng <kai.heng.feng@canonical.com> | 2019-08-28 01:34:50 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-09-06 10:20:57 +0200 |
| commit | 2bf4cd128fec2bee4ace778b107adc3820bf18b9 (patch) | |
| tree | a119aa3671c0b6e5e407a051fd3b9c5b2cb721b4 | |
| parent | 611836fcab119d894df63fc3db936da66428ec56 (diff) | |
| download | linux-stable-2bf4cd128fec2bee4ace778b107adc3820bf18b9.tar.gz linux-stable-2bf4cd128fec2bee4ace778b107adc3820bf18b9.tar.bz2 linux-stable-2bf4cd128fec2bee4ace778b107adc3820bf18b9.zip | |
USB: storage: ums-realtek: Whitelist auto-delink support
commit 1902a01e2bcc3abd7c9a18dc05e78c7ab4a53c54 upstream.
Auto-delink requires writing special registers to ums-realtek devices.
Unconditionally enable auto-delink may break newer devices.
So only enable auto-delink by default for the original three IDs,
0x0138, 0x0158 and 0x0159.
Realtek is working on a patch to properly support auto-delink for other
IDs.
BugLink: https://bugs.launchpad.net/bugs/1838886
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20190827173450.13572-2-kai.heng.feng@canonical.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/storage/realtek_cr.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/drivers/usb/storage/realtek_cr.c b/drivers/usb/storage/realtek_cr.c index 7d4bf93b3385..8e0b12cc084a 100644 --- a/drivers/usb/storage/realtek_cr.c +++ b/drivers/usb/storage/realtek_cr.c @@ -1009,12 +1009,15 @@ static int init_realtek_cr(struct us_data *us) goto INIT_FAIL; } - if (CHECK_FW_VER(chip, 0x5888) || CHECK_FW_VER(chip, 0x5889) || - CHECK_FW_VER(chip, 0x5901)) - SET_AUTO_DELINK(chip); - if (STATUS_LEN(chip) == 16) { - if (SUPPORT_AUTO_DELINK(chip)) + if (CHECK_PID(chip, 0x0138) || CHECK_PID(chip, 0x0158) || + CHECK_PID(chip, 0x0159)) { + if (CHECK_FW_VER(chip, 0x5888) || CHECK_FW_VER(chip, 0x5889) || + CHECK_FW_VER(chip, 0x5901)) SET_AUTO_DELINK(chip); + if (STATUS_LEN(chip) == 16) { + if (SUPPORT_AUTO_DELINK(chip)) + SET_AUTO_DELINK(chip); + } } #ifdef CONFIG_REALTEK_AUTOPM if (ss_en) |