From: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
To: Colin Ian King <colin.king@canonical.com>,
Oliver Neukum <oneukum@suse.com>, Arnd Bergmann <arnd@arndb.de>
Cc: linux-usb@vger.kernel.org,
Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Subject: [PATCH] USB: cdc-wdm: Call wake_up_all() when clearing WDM_IN_USE bit.
Date: Thu, 21 May 2020 08:31:29 +0900 [thread overview]
Message-ID: <20200520233129.3704-1-penguin-kernel@I-love.SAKURA.ne.jp> (raw)
Since e.g. wdm_flush() calls wait_event() on WDM_IN_USE bit,
make sure to call wake_up_all() when clearing WDM_IN_USE bit.
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
---
drivers/usb/class/cdc-wdm.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c
index e3db6fbeadef..bf2a6deb7b08 100644
--- a/drivers/usb/class/cdc-wdm.c
+++ b/drivers/usb/class/cdc-wdm.c
@@ -151,7 +151,7 @@ static void wdm_out_callback(struct urb *urb)
kfree(desc->outbuf);
desc->outbuf = NULL;
clear_bit(WDM_IN_USE, &desc->flags);
- wake_up(&desc->wait);
+ wake_up_all(&desc->wait);
}
static void wdm_in_callback(struct urb *urb)
@@ -426,6 +426,7 @@ static ssize_t wdm_write
clear_bit(WDM_IN_USE, &desc->flags);
dev_err(&desc->intf->dev, "Tx URB error: %d\n", rv);
rv = usb_translate_errors(rv);
+ wake_up_all(&desc->wait);
goto out_free_mem_pm;
} else {
dev_dbg(&desc->intf->dev, "Tx URB has been submitted index=%d\n",
--
2.18.2
next reply other threads:[~2020-05-20 23:32 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-20 23:31 Tetsuo Handa [this message]
2020-05-21 7:33 ` [PATCH] USB: cdc-wdm: Call wake_up_all() when clearing WDM_IN_USE bit Greg KH
2020-05-21 10:01 ` Tetsuo Handa
2020-05-21 19:50 ` Oliver Neukum
2020-05-21 22:48 ` Tetsuo Handa
2020-05-22 8:04 ` Oliver Neukum
2020-05-22 8:26 ` Tetsuo Handa
2020-05-25 12:06 ` Oliver Neukum
2020-05-25 13:32 ` Tetsuo Handa
2020-05-27 4:47 ` Tetsuo Handa
2020-05-28 15:18 ` Andrey Konovalov
2020-05-28 16:03 ` Tetsuo Handa
2020-05-28 19:03 ` Andrey Konovalov
2020-05-28 19:40 ` Alan Stern
2020-05-28 19:51 ` Andrey Konovalov
2020-05-28 20:58 ` Alan Stern
2020-05-29 20:41 ` Andrey Konovalov
2020-05-30 0:42 ` Tetsuo Handa
2020-05-30 1:10 ` Alan Stern
2020-05-30 4:58 ` Tetsuo Handa
2020-06-24 11:57 ` Oliver Neukum
2020-06-24 12:48 ` Tetsuo Handa
2020-05-30 6:08 ` Greg Kroah-Hartman
2020-06-01 12:26 ` Andrey Konovalov
2020-05-30 15:25 ` Oliver Neukum
2020-05-30 15:47 ` Alan Stern
2020-06-08 2:24 ` Tetsuo Handa
2020-06-18 0:48 ` Tetsuo Handa
2020-06-19 13:56 ` Andrey Konovalov
2020-06-23 11:20 ` Tetsuo Handa
2020-07-02 5:44 ` Tetsuo Handa
2020-07-02 7:24 ` Oliver Neukum
2020-07-15 6:15 ` Tetsuo Handa
2020-08-10 10:47 ` Tetsuo Handa
2020-09-24 15:09 ` [PATCH] USB: cdc-wdm: Make wdm_flush() interruptible and add wdm_fsync() Tetsuo Handa
2020-09-28 14:17 ` [PATCH (repost)] " Tetsuo Handa
2020-06-25 9:56 ` [PATCH] USB: cdc-wdm: Call wake_up_all() when clearing WDM_IN_USE bit Oliver Neukum
2020-06-25 11:15 ` Tetsuo Handa
2020-07-01 7:08 ` [TEST]Re: " Oliver Neukum
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