anierin/msm-5.15
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

media: imx-jpeg: Disable useless interrupt to avoid kernel panic

Browse Source 
[ Upstream commit c3720e65c9013a7b2a5dbb63e6bf6d74a35dd894 ]

There is a hardware bug that the interrupt STMBUF_HALF may be triggered
after or when disable interrupt.
It may led to unexpected kernel panic.
And interrupt STMBUF_HALF and STMBUF_RTND have no other effect.
So disable them and the unused interrupts.

meanwhile clear the interrupt status when disable interrupt.

Signed-off-by: Ming Qian <ming.qian@nxp.com>
Reviewed-by: Mirela Rabulea <mirela.rabulea@nxp.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Ming Qian
2022-08-04 17:38:41 +08:00
committed by Greg Kroah-Hartman
parent 6e1a6880e1
commit ad31bc146f
1 changed files with 3 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/media/platform/imx-jpeg/mxc-jpeg-hw.c
View File

@@ -76,12 +76,14 @@ void print_wrapper_info(struct device *dev, void __iomem *reg)
void mxc_jpeg_enable_irq(void __iomem *reg, int slot)
{
writel(0xFFFFFFFF, reg + MXC_SLOT_OFFSET(slot, SLOT_IRQ_EN));
writel(0xFFFFFFFF, reg + MXC_SLOT_OFFSET(slot, SLOT_STATUS));
writel(0xF0C, reg + MXC_SLOT_OFFSET(slot, SLOT_IRQ_EN));
}
void mxc_jpeg_disable_irq(void __iomem *reg, int slot)
{
writel(0x0, reg + MXC_SLOT_OFFSET(slot, SLOT_IRQ_EN));
writel(0xFFFFFFFF, reg + MXC_SLOT_OFFSET(slot, SLOT_STATUS));
}
void mxc_jpeg_sw_reset(void __iomem *reg)