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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-21 02:36:49 +07:00
60587bd068
The "handled" variable could be uninitialized if the
interrupt_service_routine() call back hasn't been implimented or if it
has been implemented but doesn't initialize "handled" to zero at the
start. For example, adv76xx_isr() only sets "handled" to true.
Fixes: 44b153ca63 ('[media] m5mols: Add ISO sensitivity controls')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
45 lines
1.4 KiB
C
45 lines
1.4 KiB
C
/*
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* Driver for the Conexant CX23885/7/8 PCIe bridge
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*
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* AV device support routines - non-input, non-vl42_subdev routines
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*
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* Copyright (C) 2010 Andy Walls <awalls@md.metrocast.net>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include "cx23885.h"
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#include "cx23885-av.h"
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#include "cx23885-video.h"
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void cx23885_av_work_handler(struct work_struct *work)
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{
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struct cx23885_dev *dev =
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container_of(work, struct cx23885_dev, cx25840_work);
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bool handled = false;
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v4l2_subdev_call(dev->sd_cx25840, core, interrupt_service_routine,
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PCI_MSK_AV_CORE, &handled);
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/* Getting here with the interrupt not handled
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then probbaly flatiron does have pending interrupts.
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*/
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if (!handled) {
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/* clear left and right adc channel interrupt request flag */
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cx23885_flatiron_write(dev, 0x1f,
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cx23885_flatiron_read(dev, 0x1f) | 0x80);
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cx23885_flatiron_write(dev, 0x23,
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cx23885_flatiron_read(dev, 0x23) | 0x80);
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}
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cx23885_irq_enable(dev, PCI_MSK_AV_CORE);
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}
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