The code was originally written using no_64bit_msi, which restricts the device to 32-bit MSI addresses.
Since msi_addr_mask is introduced, use DMA_BIT_MASK(40) instead of DMA_BIT_MASK(32) here for msi_addr_mask, describing the restriction more precisely and allowing these devices to work on platforms with MSI doorbell address above 32-bit space, as long as it is within the hardware restriction of 40-bit space. Signed-off-by: Vivian Wang <[email protected]> --- drivers/gpu/drm/radeon/radeon_irq_kms.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/radeon/radeon_irq_kms.c b/drivers/gpu/drm/radeon/radeon_irq_kms.c index d550554a6f3f..ea519d43348b 100644 --- a/drivers/gpu/drm/radeon/radeon_irq_kms.c +++ b/drivers/gpu/drm/radeon/radeon_irq_kms.c @@ -251,8 +251,8 @@ static bool radeon_msi_ok(struct radeon_device *rdev) * IBM POWER servers, so we limit them */ if (rdev->family < CHIP_BONAIRE) { - dev_info(rdev->dev, "radeon: MSI limited to 32-bit\n"); - rdev->pdev->msi_addr_mask = DMA_BIT_MASK(32); + dev_info(rdev->dev, "radeon: MSI limited to 40-bit\n"); + rdev->pdev->msi_addr_mask = DMA_BIT_MASK(40); } /* force MSI on */ -- 2.51.2
