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
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;