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authorHuacai Chen <chenhuacai@loongson.cn>2021-02-09 10:10:51 +0300
committerMarc Zyngier <maz@kernel.org>2021-02-09 13:41:40 +0300
commitc1f664d2400e73d5ca0fcd067fa5847d2c789c11 (patch)
tree7e34d6ca38949a5db8f6c959365b2d90ba2f2d4f /drivers/irqchip
parentbe1abc5ba4d2082df6749ab95ec6f87c4d3dbb23 (diff)
downloadlinux-c1f664d2400e73d5ca0fcd067fa5847d2c789c11.tar.xz
irqchip/loongson-pch-msi: Use bitmap_zalloc() to allocate bitmap
Currently we use bitmap_alloc() to allocate msi bitmap which should be initialized with zero. This is obviously wrong but it works because msi can fallback to legacy interrupt mode. So use bitmap_zalloc() instead. Fixes: 632dcc2c75ef6de3272aa ("irqchip: Add Loongson PCH MSI controller") Cc: stable@vger.kernel.org Signed-off-by: Huacai Chen <chenhuacai@loongson.cn> Signed-off-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20210209071051.2078435-1-chenhuacai@loongson.cn
Diffstat (limited to 'drivers/irqchip')
-rw-r--r--drivers/irqchip/irq-loongson-pch-msi.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/irqchip/irq-loongson-pch-msi.c b/drivers/irqchip/irq-loongson-pch-msi.c
index 12aeeab43289..32562b7e681b 100644
--- a/drivers/irqchip/irq-loongson-pch-msi.c
+++ b/drivers/irqchip/irq-loongson-pch-msi.c
@@ -225,7 +225,7 @@ static int pch_msi_init(struct device_node *node,
goto err_priv;
}
- priv->msi_map = bitmap_alloc(priv->num_irqs, GFP_KERNEL);
+ priv->msi_map = bitmap_zalloc(priv->num_irqs, GFP_KERNEL);
if (!priv->msi_map) {
ret = -ENOMEM;
goto err_priv;