From: Mathieu OTHACEHE <m.othacehe@gmail.com>
To: johan@kernel.org, gregkh@linuxfoundation.org
Cc: linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org,
Mathieu OTHACEHE <m.othacehe@gmail.com>
Subject: [PATCH v2 20/22] usb: serial: ti_usb_3410_5052: Set shadow msr before waking up waiters
Date: Tue, 26 Jul 2016 20:00:00 +0200 [thread overview]
Message-ID: <20160726180002.2398-21-m.othacehe@gmail.com> (raw)
In-Reply-To: <20160726180002.2398-1-m.othacehe@gmail.com>
Save msr before testing the delta and waking up any waiters.
Also use port directly instead of tport->tp_port.
Signed-off-by: Mathieu OTHACEHE <m.othacehe@gmail.com>
---
drivers/usb/serial/ti_usb_3410_5052.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/drivers/usb/serial/ti_usb_3410_5052.c b/drivers/usb/serial/ti_usb_3410_5052.c
index 24e1d52..168a969 100644
--- a/drivers/usb/serial/ti_usb_3410_5052.c
+++ b/drivers/usb/serial/ti_usb_3410_5052.c
@@ -1547,9 +1547,12 @@ static void ti_handle_new_msr(struct usb_serial_port *port, u8 msr)
dev_dbg(&port->dev, "%s - msr 0x%02X\n", __func__, msr);
+ spin_lock_irqsave(&tport->tp_lock, flags);
+ tport->tp_msr = msr & TI_MSR_MASK;
+ spin_unlock_irqrestore(&tport->tp_lock, flags);
+
if (msr & TI_MSR_DELTA_MASK) {
- spin_lock_irqsave(&tport->tp_lock, flags);
- icount = &tport->tp_port->icount;
+ icount = &port->icount;
if (msr & TI_MSR_DELTA_CTS)
icount->cts++;
if (msr & TI_MSR_DELTA_DSR)
@@ -1558,11 +1561,9 @@ static void ti_handle_new_msr(struct usb_serial_port *port, u8 msr)
icount->dcd++;
if (msr & TI_MSR_DELTA_RI)
icount->rng++;
+
wake_up_interruptible(&port->port.delta_msr_wait);
- spin_unlock_irqrestore(&tport->tp_lock, flags);
}
-
- tport->tp_msr = msr & TI_MSR_MASK;
}
--
2.9.0
next prev parent reply other threads:[~2016-07-26 18:06 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-26 17:59 [PATCH v2 00/22] usb: serial: ti_usb_3410_5052: clean driver Mathieu OTHACEHE
2016-07-26 17:59 ` [PATCH v2 01/22] usb: serial: ti_usb_3410_5052: Do not use __uX types Mathieu OTHACEHE
2016-08-23 7:44 ` Johan Hovold
2016-07-26 17:59 ` [PATCH v2 02/22] usb: serial: ti_usb_3410_5052: Remove useless dev_dbg messages Mathieu OTHACEHE
2016-08-23 7:52 ` Johan Hovold
2016-07-26 17:59 ` [PATCH v2 03/22] usb: serial: ti_usb_3410_5052: Use kzalloc instead of kmalloc Mathieu OTHACEHE
2016-07-27 8:09 ` Oliver Neukum
2016-07-27 12:46 ` Mathieu OTHACEHE
2016-08-23 7:54 ` Johan Hovold
2016-07-27 11:21 ` Sergei Shtylyov
2016-07-26 17:59 ` [PATCH v2 04/22] usb: serial: ti_usb_3410_5052: Remove useless NULL-testing Mathieu OTHACEHE
2016-08-23 8:04 ` Johan Hovold
2016-07-26 17:59 ` [PATCH v2 05/22] usb: serial: ti_usb_3410_5052: Use C_X macros instead of c_cflag manipulation Mathieu OTHACEHE
2016-07-26 17:59 ` [PATCH v2 06/22] usb: serial: ti_usb_3410_5052: Remove unused variables Mathieu OTHACEHE
2016-08-23 8:15 ` Johan Hovold
2016-07-26 17:59 ` [PATCH v2 07/22] usb: serial: ti_usb_3410_5052: Use macros instead of magic values Mathieu OTHACEHE
2016-08-23 8:19 ` Johan Hovold
2016-07-26 17:59 ` [PATCH v2 08/22] usb: serial: ti_usb_3410_5052: Remove in_sync and out_sync functions Mathieu OTHACEHE
2016-07-26 17:59 ` [PATCH v2 09/22] usb: serial: ti_usb_3410_5052: Remove useless tty_wakeup Mathieu OTHACEHE
2016-07-26 17:59 ` [PATCH v2 10/22] usb: serial: ti_usb_3410_5052: Change ti_write_byte function arguments Mathieu OTHACEHE
2016-07-27 8:13 ` Oliver Neukum
2016-07-27 16:08 ` Mathieu OTHACEHE
2016-07-27 19:10 ` Oliver Neukum
2016-07-26 17:59 ` [PATCH v2 11/22] usb: serial: ti_usb_3410_5052: Do not modify interrupt context Mathieu OTHACEHE
2016-07-26 17:59 ` [PATCH v2 12/22] usb: serial: ti_usb_3410_5052: Remove usb_serial pointer in ti_port Mathieu OTHACEHE
2016-07-26 17:59 ` [PATCH v2 13/22] usb: serial: ti_usb_3410_5052: Change ti_get/set_serial_info function arguments Mathieu OTHACEHE
2016-07-26 17:59 ` [PATCH v2 14/22] usb: serial: ti_usb_3410_5052: Do not set shadow mcr in open callback Mathieu OTHACEHE
2016-07-26 17:59 ` [PATCH v2 15/22] usb: serial: ti_usb_3410_5052: Check old_termios parameter in set_termios Mathieu OTHACEHE
2016-07-26 17:59 ` [PATCH v2 16/22] usb: serial: ti_usb_3410_5052: Raise DTR and RTS flags if speed is not null anymore Mathieu OTHACEHE
2016-07-26 17:59 ` [PATCH v2 17/22] usb: serial: ti_usb_3410_5052: Fix firmware downloading Mathieu OTHACEHE
2016-07-26 17:59 ` [PATCH v2 18/22] usb: serial: ti_usb_3410_5052: Standardize debug and error messages Mathieu OTHACEHE
2016-07-26 17:59 ` [PATCH v2 19/22] usb: serial: ti_usb_3410_5052: Use variables for vendor and product Mathieu OTHACEHE
2016-07-26 18:00 ` Mathieu OTHACEHE [this message]
2016-07-26 18:00 ` [PATCH v2 21/22] usb: serial: ti_usb_3410_5052: Add CMSPAR support Mathieu OTHACEHE
2016-07-26 18:00 ` [PATCH v2 22/22] usb: serial: ti_usb_3410_5052: Fix indentation problems Mathieu OTHACEHE
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