From 3189713a1b84ac02cce3217955ae68d0d67b15b7 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Thu, 1 Apr 2021 17:52:53 +0200 Subject: iommu: remove iommu_set_cmd_line_dma_api and iommu_cmd_line_dma_api Don't obsfucate the trivial bit flag check. Signed-off-by: Christoph Hellwig Acked-by: Will Deacon Link: https://lore.kernel.org/r/20210401155256.298656-18-hch@lst.de Signed-off-by: Joerg Roedel --- drivers/iommu/iommu.c | 23 +++++------------------ 1 file changed, 5 insertions(+), 18 deletions(-) (limited to 'drivers/iommu') diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 4738bc024240..7d1f50ac3709 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -70,16 +70,6 @@ static const char * const iommu_group_resv_type_string[] = { #define IOMMU_CMD_LINE_DMA_API BIT(0) -static void iommu_set_cmd_line_dma_api(void) -{ - iommu_cmd_line |= IOMMU_CMD_LINE_DMA_API; -} - -static bool iommu_cmd_line_dma_api(void) -{ - return !!(iommu_cmd_line & IOMMU_CMD_LINE_DMA_API); -} - static int iommu_alloc_default_domain(struct iommu_group *group, struct device *dev); static struct iommu_domain *__iommu_domain_alloc(struct bus_type *bus, @@ -130,9 +120,7 @@ static const char *iommu_domain_type_str(unsigned int t) static int __init iommu_subsys_init(void) { - bool cmd_line = iommu_cmd_line_dma_api(); - - if (!cmd_line) { + if (!(iommu_cmd_line & IOMMU_CMD_LINE_DMA_API)) { if (IS_ENABLED(CONFIG_IOMMU_DEFAULT_PASSTHROUGH)) iommu_set_default_passthrough(false); else @@ -146,7 +134,8 @@ static int __init iommu_subsys_init(void) pr_info("Default domain type: %s %s\n", iommu_domain_type_str(iommu_def_domain_type), - cmd_line ? "(set via kernel command line)" : ""); + (iommu_cmd_line & IOMMU_CMD_LINE_DMA_API) ? + "(set via kernel command line)" : ""); return 0; } @@ -2757,16 +2746,14 @@ EXPORT_SYMBOL_GPL(iommu_alloc_resv_region); void iommu_set_default_passthrough(bool cmd_line) { if (cmd_line) - iommu_set_cmd_line_dma_api(); - + iommu_cmd_line |= IOMMU_CMD_LINE_DMA_API; iommu_def_domain_type = IOMMU_DOMAIN_IDENTITY; } void iommu_set_default_translated(bool cmd_line) { if (cmd_line) - iommu_set_cmd_line_dma_api(); - + iommu_cmd_line |= IOMMU_CMD_LINE_DMA_API; iommu_def_domain_type = IOMMU_DOMAIN_DMA; } -- cgit v1.2.3