xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ocxl: afu_irq only deals with IRQ IDs, not offsets

Browse Source 
The use of offsets is required only in the frontend, so alter
the IRQ API to only work with IRQ IDs in the backend.

Signed-off-by: Alastair D'Silva <alastair@d-silva.org>
Acked-by: Frederic Barrat <fbarrat@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Alastair D'Silva
2019-03-27 16:31:34 +11:00
committed by Michael Ellerman
parent b9721d275c
commit 2ec3b7ed2a
5 changed files with 39 additions and 37 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/misc/ocxl/context.c
View File

@@ -94,8 +94,9 @@ static vm_fault_t map_afu_irq(struct vm_area_struct *vma, unsigned long address,
u64 offset, struct ocxl_context *ctx)
{
u64 trigger_addr;
int irq_id = ocxl_irq_offset_to_id(ctx, offset);
trigger_addr = ocxl_afu_irq_get_addr(ctx, offset);
trigger_addr = ocxl_afu_irq_get_addr(ctx, irq_id);
if (!trigger_addr)
return VM_FAULT_SIGBUS;
@@ -155,12 +156,14 @@ static const struct vm_operations_struct ocxl_vmops = {
static int check_mmap_afu_irq(struct ocxl_context *ctx,
struct vm_area_struct *vma)
{
int irq_id = ocxl_irq_offset_to_id(ctx, vma->vm_pgoff << PAGE_SHIFT);
/* only one page */
if (vma_pages(vma) != 1)
return -EINVAL;
/* check offset validty */
if (!ocxl_afu_irq_get_addr(ctx, vma->vm_pgoff << PAGE_SHIFT))
if (!ocxl_afu_irq_get_addr(ctx, irq_id))
return -EINVAL;
/*