lkml.org 
[lkml]   [2019]   [Apr]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] powerpc/pseries/iommu: fix set but not used values
Date
The commit b7d6bf4fdd47 ("powerpc/pseries/pci: Remove obsolete SW
invalidate") left 2 variables unused.

arch/powerpc/platforms/pseries/iommu.c: In function 'tce_build_pSeries':
arch/powerpc/platforms/pseries/iommu.c:108:17: warning: variable 'tces'
set but not used [-Wunused-but-set-variable]
__be64 *tcep, *tces;
^~~~
arch/powerpc/platforms/pseries/iommu.c: In function 'tce_free_pSeries':
arch/powerpc/platforms/pseries/iommu.c:132:17: warning: variable 'tces'
set but not used [-Wunused-but-set-variable]
__be64 *tcep, *tces;
^~~~

Also, the commit 68c0449ea16d ("powerpc/pseries/iommu: Use memory@ nodes
in max RAM address calculation") set "ranges" in
ddw_memory_hotplug_max() but never use it.

arch/powerpc/platforms/pseries/iommu.c: In function
'ddw_memory_hotplug_max':
arch/powerpc/platforms/pseries/iommu.c:948:7: warning: variable 'ranges'
set but not used [-Wunused-but-set-variable]
int ranges, n_mem_addr_cells, n_mem_size_cells, len;
^~~~~~

Signed-off-by: Qian Cai <cai@lca.pw>
---
arch/powerpc/platforms/pseries/iommu.c | 13 +++++--------
1 file changed, 5 insertions(+), 8 deletions(-)

diff --git a/arch/powerpc/platforms/pseries/iommu.c b/arch/powerpc/platforms/pseries/iommu.c
index 36eb1ddbac69..03bbb299320e 100644
--- a/arch/powerpc/platforms/pseries/iommu.c
+++ b/arch/powerpc/platforms/pseries/iommu.c
@@ -105,7 +105,7 @@ static int tce_build_pSeries(struct iommu_table *tbl, long index,
unsigned long attrs)
{
u64 proto_tce;
- __be64 *tcep, *tces;
+ __be64 *tcep;
u64 rpn;

proto_tce = TCE_PCI_READ; // Read allowed
@@ -113,7 +113,7 @@ static int tce_build_pSeries(struct iommu_table *tbl, long index,
if (direction != DMA_TO_DEVICE)
proto_tce |= TCE_PCI_WRITE;

- tces = tcep = ((__be64 *)tbl->it_base) + index;
+ tcep = ((__be64 *)tbl->it_base) + index;

while (npages--) {
/* can't move this out since we might cross MEMBLOCK boundary */
@@ -129,9 +129,9 @@ static int tce_build_pSeries(struct iommu_table *tbl, long index,

static void tce_free_pSeries(struct iommu_table *tbl, long index, long npages)
{
- __be64 *tcep, *tces;
+ __be64 *tcep;

- tces = tcep = ((__be64 *)tbl->it_base) + index;
+ tcep = ((__be64 *)tbl->it_base) + index;

while (npages--)
*(tcep++) = 0;
@@ -945,7 +945,7 @@ static phys_addr_t ddw_memory_hotplug_max(void)

for_each_node_by_type(memory, "memory") {
unsigned long start, size;
- int ranges, n_mem_addr_cells, n_mem_size_cells, len;
+ int n_mem_addr_cells, n_mem_size_cells, len;
const __be32 *memcell_buf;

memcell_buf = of_get_property(memory, "reg", &len);
@@ -955,9 +955,6 @@ static phys_addr_t ddw_memory_hotplug_max(void)
n_mem_addr_cells = of_n_addr_cells(memory);
n_mem_size_cells = of_n_size_cells(memory);

- /* ranges in cell */
- ranges = (len >> 2) / (n_mem_addr_cells + n_mem_size_cells);
-
start = of_read_number(memcell_buf, n_mem_addr_cells);
memcell_buf += n_mem_addr_cells;
size = of_read_number(memcell_buf, n_mem_size_cells);
--
2.17.2 (Apple Git-113)
\
 
 \ /
  Last update: 2019-04-07 04:49    [W:0.050 / U:23.556 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site