iommu/sun50i: Change the readl timeout to the atomic variant
The flush_all_tlb call back can be called from an atomic context, so using
readl_poll_timeout that embeds a udelay doesn't work.
Fixes: 4100b8c229
("iommu: Add Allwinner H6 IOMMU driver")
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/20200628180844.79205-1-maxime@cerno.tech
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
parent
9ebcfadb06
commit
bc8784f348
|
@ -313,9 +313,9 @@ static int sun50i_iommu_flush_all_tlb(struct sun50i_iommu *iommu)
|
|||
IOMMU_TLB_FLUSH_MICRO_TLB(1) |
|
||||
IOMMU_TLB_FLUSH_MICRO_TLB(0));
|
||||
|
||||
ret = readl_poll_timeout(iommu->base + IOMMU_TLB_FLUSH_REG,
|
||||
reg, !reg,
|
||||
1, 2000);
|
||||
ret = readl_poll_timeout_atomic(iommu->base + IOMMU_TLB_FLUSH_REG,
|
||||
reg, !reg,
|
||||
1, 2000);
|
||||
if (ret)
|
||||
dev_warn(iommu->dev, "TLB Flush timed out!\n");
|
||||
|
||||
|
|
Loading…
Reference in a new issue