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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2015-06-16 23:29:41 +0100 |
|---|---|---|
| committer | Philipp Zabel <p.zabel@pengutronix.de> | 2015-07-10 11:02:46 +0200 |
| commit | 510e6426d32baf46b6df929e6689ef65fcb58a2c (patch) | |
| tree | b22572de17b81e2d32e5f8409eeab77aad11c436 /drivers/gpu/ipu-v3/ipu-common.c | |
| parent | 553a59fc8f5d51c3824c0b7d4ca61e780157defa (diff) | |
| download | linux-stable-510e6426d32baf46b6df929e6689ef65fcb58a2c.tar.gz linux-stable-510e6426d32baf46b6df929e6689ef65fcb58a2c.tar.bz2 linux-stable-510e6426d32baf46b6df929e6689ef65fcb58a2c.zip | |
GPU: ipu: fix lockup caused by pending chained interrupts
Even with the oops fixed by a previous patch, the system still fails to
kexec, due to a stuck chained interrupt locking the system. We must
disable the child interrupts prior to setting up the irq chip to ensure
we don't get stuck here.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Diffstat (limited to 'drivers/gpu/ipu-v3/ipu-common.c')
| -rw-r--r-- | drivers/gpu/ipu-v3/ipu-common.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/ipu-v3/ipu-common.c b/drivers/gpu/ipu-v3/ipu-common.c index 6d2f39d36e44..00f2058944e5 100644 --- a/drivers/gpu/ipu-v3/ipu-common.c +++ b/drivers/gpu/ipu-v3/ipu-common.c @@ -1107,6 +1107,9 @@ static int ipu_irq_init(struct ipu_soc *ipu) return ret; } + for (i = 0; i < IPU_NUM_IRQS; i += 32) + ipu_cm_write(ipu, 0, IPU_INT_CTRL(i / 32)); + for (i = 0; i < IPU_NUM_IRQS; i += 32) { gc = irq_get_domain_generic_chip(ipu->domain, i); gc->reg_base = ipu->cm_reg; |