From: Kees Cook <keescook@chromium.org>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: Kees Cook <keescook@chromium.org>, Ian Abbott <abbotti@mev.co.uk>,
H Hartley Sweeten <hsweeten@visionengravers.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org
Subject: [PATCH v2 26/31] staging/comedi/das16: Make timer initialization unconditional
Date: Wed, 20 Sep 2017 16:27:50 -0700 [thread overview]
Message-ID: <1505950075-50223-27-git-send-email-keescook@chromium.org> (raw)
In-Reply-To: <1505950075-50223-1-git-send-email-keescook@chromium.org>
With timer initialization made unconditional, there is no reason to
make del_timer_sync() calls conditionally, there by removing the test
of the .data field.
Cc: Ian Abbott <abbotti@mev.co.uk>
Cc: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: devel@driverdev.osuosl.org
Signed-off-by: Kees Cook <keescook@chromium.org>
---
drivers/staging/comedi/drivers/das16.c | 10 ++++------
1 file changed, 4 insertions(+), 6 deletions(-)
diff --git a/drivers/staging/comedi/drivers/das16.c b/drivers/staging/comedi/drivers/das16.c
index 5d157951f63f..2b2a446af3f5 100644
--- a/drivers/staging/comedi/drivers/das16.c
+++ b/drivers/staging/comedi/drivers/das16.c
@@ -934,6 +934,9 @@ static void das16_alloc_dma(struct comedi_device *dev, unsigned int dma_chan)
{
struct das16_private_struct *devpriv = dev->private;
+ setup_timer(&devpriv->timer, das16_timer_interrupt,
+ (unsigned long)dev);
+
/* only DMA channels 3 and 1 are valid */
if (!(dma_chan == 1 || dma_chan == 3))
return;
@@ -941,10 +944,6 @@ static void das16_alloc_dma(struct comedi_device *dev, unsigned int dma_chan)
/* DMA uses two buffers */
devpriv->dma = comedi_isadma_alloc(dev, 2, dma_chan, dma_chan,
DAS16_DMA_SIZE, COMEDI_ISADMA_READ);
- if (devpriv->dma) {
- setup_timer(&devpriv->timer, das16_timer_interrupt,
- (unsigned long)dev);
- }
}
static void das16_free_dma(struct comedi_device *dev)
@@ -952,8 +951,7 @@ static void das16_free_dma(struct comedi_device *dev)
struct das16_private_struct *devpriv = dev->private;
if (devpriv) {
- if (devpriv->timer.data)
- del_timer_sync(&devpriv->timer);
+ del_timer_sync(&devpriv->timer);
comedi_isadma_free(devpriv->dma);
}
}
--
2.7.4
next prev parent reply other threads:[~2017-09-20 23:37 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-20 23:27 [PATCH v2 00/31] struct timer_list callback argument conversion, step 1 Kees Cook
2017-09-20 23:27 ` [PATCH v2 01/31] coccinelle: Improve setup_timer.cocci matching Kees Cook
2017-09-23 20:43 ` Julia Lawall
2017-11-07 0:18 ` Masahiro Yamada
2017-09-20 23:27 ` [PATCH v2 02/31] timer: Convert open-coded init_timer() to setup_timer() Kees Cook
2017-09-20 23:27 ` [PATCH v2 03/31] timer: Remove init_timer_pinned_deferrable() in favor of setup_pinned_deferrable_timer() Kees Cook
2017-09-26 11:12 ` Gautham R Shenoy
2017-09-20 23:27 ` [PATCH v2 04/31] timer: Remove init_timer_on_stack() in favor of setup_timer_on_stack() Kees Cook
2017-09-20 23:27 ` [PATCH v2 05/31] timer: Remove init_timer_pinned() in favor of setup_pinned_timer() Kees Cook
2017-09-20 23:27 ` [PATCH v2 06/31] timer: Remove init_timer_deferrable() in favor of setup_deferrable_timer() Kees Cook
2017-09-20 23:27 ` [PATCH v2 07/31] timer: Remove users of TIMER_DEFERRED_INITIALIZER Kees Cook
2017-09-20 23:27 ` [PATCH v2 08/31] timer: Remove users of TIMER_INITIALIZER Kees Cook
2017-09-20 23:27 ` [PATCH v2 09/31] timer: Remove unused static initializer macros Kees Cook
2017-09-20 23:27 ` [PATCH v2 10/31] timer: Remove users of expire and data arguments to DEFINE_TIMER Kees Cook
2017-09-20 23:27 ` [PATCH v2 11/31] timer: Remove expires and data arguments from DEFINE_TIMER Kees Cook
2017-09-20 23:27 ` [PATCH v2 12/31] timer: Remove expires argument from __TIMER_INITIALIZER() Kees Cook
2017-09-20 23:27 ` [PATCH v2 13/31] timer: Remove meaningless .data/.function assignments Kees Cook
2017-09-20 23:27 ` [PATCH v2 14/31] timer: Collapse cross-function single-assignment .data into setup_timer() Kees Cook
2017-09-20 23:27 ` [PATCH v2 15/31] timer: Additional init_timer() -> setup_timer() conversions Kees Cook
2017-09-20 23:27 ` [PATCH v2 16/31] usb/phy-isp1301-omap: Remove .data assignment Kees Cook
2017-09-28 9:36 ` Felipe Balbi
2017-09-20 23:27 ` [PATCH v2 17/31] media/i2c/tc358743: Initialize timer Kees Cook
2017-09-20 23:27 ` [PATCH v2 18/31] scsi/aic7xxx: Clean up timer usage Kees Cook
2017-09-21 7:35 ` Hannes Reinecke
2017-09-20 23:27 ` [PATCH v2 19/31] timer: Remove open-coded casts for .data and .function Kees Cook
2017-09-20 23:27 ` [PATCH v2 20/31] net/core: Collapse redundant sk_timer callback data assignments Kees Cook
2017-09-20 23:27 ` [PATCH v2 21/31] s390/char/sclp: Use separate static data field with with static timer Kees Cook
2017-09-20 23:27 ` [PATCH v2 22/31] sparc/led: " Kees Cook
2017-09-20 23:27 ` [PATCH v2 23/31] mips/sgi-ip32: " Kees Cook
2017-09-20 23:27 ` [PATCH v2 24/31] mips/sgi-ip22: " Kees Cook
2017-09-20 23:27 ` [PATCH v2 25/31] net/atm/mpc: " Kees Cook
2017-09-20 23:27 ` Kees Cook [this message]
2017-09-21 10:33 ` [PATCH v2 26/31] staging/comedi/das16: Make timer initialization unconditional Ian Abbott
2017-09-20 23:27 ` [PATCH v2 27/31] usb/gadget/snps_udc_core: Remove struct timer_list.data use Kees Cook
2017-09-21 14:06 ` Michal Nazarewicz
2017-09-28 9:36 ` Felipe Balbi
2017-09-20 23:27 ` [PATCH v2 28/31] infiniband/rdmavt: Remove redundant timer initialization Kees Cook
2017-09-20 23:27 ` [PATCH v2 29/31] scsi/bnx2i: Initialize timer Kees Cook
2017-09-20 23:27 ` [PATCH v2 30/31] appletalk: Remove unneeded synchronization Kees Cook
2017-09-20 23:27 ` [PATCH v2 31/31] timer: Switch to testing for .function instead of .data Kees Cook
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