This was just a way for the DT-passed value to get out of sync with
what Linux has configured the ARM for.
Signed-off-by: Eric Anholt <eric@xxxxxxxxxx>
---
.../interface/vchiq_arm/vchiq_2835_arm.c | 25 +++++++---------------
.../interface/vchiq_arm/vchiq_pagelist.h | 1 -
2 files changed, 8 insertions(+), 18 deletions(-)
diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c
index b59ef14890aa..e0e01c812036 100644
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c
@@ -77,7 +77,6 @@ struct vchiq_pagelist_info {
};
static void __iomem *g_regs;
-static unsigned int g_cache_line_size = sizeof(CACHE_LINE_SIZE);
static unsigned int g_fragments_size;
static char *g_fragments_base;
static char *g_free_fragments;
@@ -117,15 +116,7 @@ int vchiq_platform_init(struct platform_device *pdev, VCHIQ_STATE_T *state)
if (err < 0)
return err;
- err = of_property_read_u32(dev->of_node, "cache-line-size",
- &g_cache_line_size);
-
- if (err) {
- dev_err(dev, "Missing cache-line-size property\n");
- return -ENODEV;
- }
-
- g_fragments_size = 2 * g_cache_line_size;
+ g_fragments_size = 2 * cache_line_size();
/* Allocate space for the channels in coherent memory */
slot_mem_size = PAGE_ALIGN(TOTAL_SLOTS * VCHIQ_SLOT_SIZE);
@@ -548,9 +539,9 @@ create_pagelist(char __user *buf, size_t count, unsigned short type)
/* Partial cache lines (fragments) require special measures */
if ((type == PAGELIST_READ) &&
- ((pagelist->offset & (g_cache_line_size - 1)) ||
+ ((pagelist->offset & (cache_line_size() - 1)) ||
((pagelist->offset + pagelist->length) &
- (g_cache_line_size - 1)))) {
+ (cache_line_size() - 1)))) {
char *fragments;
if (down_interruptible(&g_free_fragments_sema) != 0) {
@@ -598,10 +589,10 @@ free_pagelist(struct vchiq_pagelist_info *pagelistinfo,
g_fragments_size;
int head_bytes, tail_bytes;
- head_bytes = (g_cache_line_size - pagelist->offset) &
- (g_cache_line_size - 1);
+ head_bytes = (cache_line_size() - pagelist->offset) &
+ (cache_line_size() - 1);
tail_bytes = (pagelist->offset + actual) &
- (g_cache_line_size - 1);
+ (cache_line_size() - 1);
if ((actual >= 0) && (head_bytes != 0)) {
if (head_bytes > actual)
@@ -617,8 +608,8 @@ free_pagelist(struct vchiq_pagelist_info *pagelistinfo,
(tail_bytes != 0)) {
memcpy((char *)kmap(pages[num_pages - 1]) +
((pagelist->offset + actual) &
- (PAGE_SIZE - 1) & ~(g_cache_line_size - 1)),
- fragments + g_cache_line_size,
+ (PAGE_SIZE - 1) & ~(cache_line_size() - 1)),
+ fragments + cache_line_size(),
tail_bytes);
kunmap(pages[num_pages - 1]);
}
diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_pagelist.h b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_pagelist.h
index a6c5f7cc78f0..bec411061554 100644
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_pagelist.h
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_pagelist.h
@@ -34,7 +34,6 @@
#ifndef VCHIQ_PAGELIST_H
#define VCHIQ_PAGELIST_H
-#define CACHE_LINE_SIZE 32
#define PAGELIST_WRITE 0
#define PAGELIST_READ 1
#define PAGELIST_READ_WITH_FRAGMENTS 2
--
2.16.2
--
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