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iommu: remove the unused domain_window_disable method

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domain_window_disable is wired up by fsl_pamu, but never actually called.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Will Deacon <will@kernel.org>
Acked-by: Li Yang <leoyang.li@nxp.com>
Link: https://lore.kernel.org/r/20210401155256.298656-2-hch@lst.de
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Christoph Hellwig 2021-04-01 17:52:37 +02:00 committed by Joerg Roedel
parent cdf315f907
commit 47685cb202
2 changed files with 0 additions and 50 deletions
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48
drivers/iommu/fsl_pamu_domain.c
View File

@ -473,53 +473,6 @@ static int update_domain_mapping(struct fsl_dma_domain *dma_domain, u32 wnd_nr)
return ret;
}
static int disable_domain_win(struct fsl_dma_domain *dma_domain, u32 wnd_nr)
{
struct device_domain_info *info;
int ret = 0;
list_for_each_entry(info, &dma_domain->devices, link) {
if (dma_domain->win_cnt == 1 && dma_domain->enabled) {
ret = pamu_disable_liodn(info->liodn);
if (!ret)
dma_domain->enabled = 0;
} else {
ret = pamu_disable_spaace(info->liodn, wnd_nr);
}
}
return ret;
}
static void fsl_pamu_window_disable(struct iommu_domain *domain, u32 wnd_nr)
{
struct fsl_dma_domain *dma_domain = to_fsl_dma_domain(domain);
unsigned long flags;
int ret;
spin_lock_irqsave(&dma_domain->domain_lock, flags);
if (!dma_domain->win_arr) {
pr_debug("Number of windows not configured\n");
spin_unlock_irqrestore(&dma_domain->domain_lock, flags);
return;
}
if (wnd_nr >= dma_domain->win_cnt) {
pr_debug("Invalid window index\n");
spin_unlock_irqrestore(&dma_domain->domain_lock, flags);
return;
}
if (dma_domain->win_arr[wnd_nr].valid) {
ret = disable_domain_win(dma_domain, wnd_nr);
if (!ret) {
dma_domain->win_arr[wnd_nr].valid = 0;
dma_domain->mapped--;
}
}
spin_unlock_irqrestore(&dma_domain->domain_lock, flags);
}
static int fsl_pamu_window_enable(struct iommu_domain *domain, u32 wnd_nr,
phys_addr_t paddr, u64 size, int prot)
@ -1032,7 +985,6 @@ static const struct iommu_ops fsl_pamu_ops = {
.attach_dev = fsl_pamu_attach_device,
.detach_dev = fsl_pamu_detach_device,
.domain_window_enable = fsl_pamu_window_enable,
.domain_window_disable = fsl_pamu_window_disable,
.iova_to_phys = fsl_pamu_iova_to_phys,
.domain_set_attr = fsl_pamu_set_domain_attr,
.domain_get_attr = fsl_pamu_get_domain_attr,

2
include/linux/iommu.h
View File

@ -223,7 +223,6 @@ struct iommu_iotlb_gather {
* @put_resv_regions: Free list of reserved regions for a device
* @apply_resv_region: Temporary helper call-back for iova reserved ranges
* @domain_window_enable: Configure and enable a particular window for a domain
* @domain_window_disable: Disable a particular window for a domain
* @of_xlate: add OF master IDs to iommu grouping
* @is_attach_deferred: Check if domain attach should be deferred from iommu
* driver init to device driver init (default no)
@ -284,7 +283,6 @@ struct iommu_ops {
/* Window handling functions */
int (*domain_window_enable)(struct iommu_domain *domain, u32 wnd_nr,
phys_addr_t paddr, u64 size, int prot);
void (*domain_window_disable)(struct iommu_domain *domain, u32 wnd_nr);
int (*of_xlate)(struct device *dev, struct of_phandle_args *args);
bool (*is_attach_deferred)(struct iommu_domain *domain, struct device *dev);