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authorVladimir Murzin <vladimir.murzin@arm.com>2021-03-11 13:32:16 +0100
committerRussell King <rmk+kernel@armlinux.org.uk>2021-03-25 10:25:20 +0000
commit45c2f70cba3a7eff34574103b2e2b901a5f771aa (patch)
treee97f0d5eb619a8328d78e34705a492daf3d0b30f /arch/arm/mm
parentd624833f5984d484c5e3196f34b926f9e71dafee (diff)
ARM: 9069/1: NOMMU: Fix conversion for_each_membock() to for_each_mem_range()
for_each_mem_range() uses a loop variable, yet looking into code it is not just iteration counter but more complex entity which encodes information about memblock. Thus condition i == 0 looks fragile. Indeed, it broke boot of R-class platforms since it never took i == 0 path (due to i was set to 1). Fix that with restoring original flag check. Fixes: b10d6bca8720 ("arch, drivers: replace for_each_membock() with for_each_mem_range()") Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com> Acked-by: Mike Rapoport <rppt@linux.ibm.com> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Diffstat (limited to 'arch/arm/mm')
-rw-r--r--arch/arm/mm/pmsa-v7.c4
-rw-r--r--arch/arm/mm/pmsa-v8.c4
2 files changed, 6 insertions, 2 deletions
diff --git a/arch/arm/mm/pmsa-v7.c b/arch/arm/mm/pmsa-v7.c
index 88950e41a3a9..59d916ccdf25 100644
--- a/arch/arm/mm/pmsa-v7.c
+++ b/arch/arm/mm/pmsa-v7.c
@@ -235,6 +235,7 @@ void __init pmsav7_adjust_lowmem_bounds(void)
phys_addr_t mem_end;
phys_addr_t reg_start, reg_end;
unsigned int mem_max_regions;
+ bool first = true;
int num;
u64 i;
@@ -263,7 +264,7 @@ void __init pmsav7_adjust_lowmem_bounds(void)
#endif
for_each_mem_range(i, &reg_start, &reg_end) {
- if (i == 0) {
+ if (first) {
phys_addr_t phys_offset = PHYS_OFFSET;
/*
@@ -275,6 +276,7 @@ void __init pmsav7_adjust_lowmem_bounds(void)
mem_start = reg_start;
mem_end = reg_end;
specified_mem_size = mem_end - mem_start;
+ first = false;
} else {
/*
* memblock auto merges contiguous blocks, remove
diff --git a/arch/arm/mm/pmsa-v8.c b/arch/arm/mm/pmsa-v8.c
index 2de019f7503e..8359748a19a1 100644
--- a/arch/arm/mm/pmsa-v8.c
+++ b/arch/arm/mm/pmsa-v8.c
@@ -95,10 +95,11 @@ void __init pmsav8_adjust_lowmem_bounds(void)
{
phys_addr_t mem_end;
phys_addr_t reg_start, reg_end;
+ bool first = true;
u64 i;
for_each_mem_range(i, &reg_start, &reg_end) {
- if (i == 0) {
+ if (first) {
phys_addr_t phys_offset = PHYS_OFFSET;
/*
@@ -107,6 +108,7 @@ void __init pmsav8_adjust_lowmem_bounds(void)
if (reg_start != phys_offset)
panic("First memory bank must be contiguous from PHYS_OFFSET");
mem_end = reg_end;
+ first = false;
} else {
/*
* memblock auto merges contiguous blocks, remove