diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-02-09 08:01:18 +1100 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-02-09 08:01:18 +1100 |
commit | 39923134885759405e64cb9491a273a2bcd356ed (patch) | |
tree | 68029dba9ea39cef1ed694764bd4f91026d9ddda /arch | |
parent | e06b84052a0721a4432e5242cf7526d47869b063 (diff) | |
parent | 79d1f5c9acf9fc8d06e5537083b19114ce87159f (diff) | |
download | linux-3.10-39923134885759405e64cb9491a273a2bcd356ed.tar.gz linux-3.10-39923134885759405e64cb9491a273a2bcd356ed.tar.bz2 linux-3.10-39923134885759405e64cb9491a273a2bcd356ed.zip |
Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm
Pull ARM fixes from Russell King:
"I was going to hold these off until v3.8 was out, and send them with a
stable tag, but as everyone else is pushing much bigger fixes which
Linus is accepting, let's save people from the hastle of having to
patch v3.8 back into working or use a stable kernel.
Looking at the diffstat, this really is high value for its size; this
is miniscule compared to how the -rc6 to tip diffstat currently looks.
So, four patches in this set:
- Punit Agrawal reports that the kernel no longer boots on MPCore due
to a new assumption made in the GIC code which isn't true of
earlier GIC designs. This is the biggest change in this set.
- Punit's boot log also revealed a bunch of WARN_ON() dumps caused by
the DT-ification of the GIC support without fixing up non-DT
Realview - which now sees a greater number of interrupts than it
did before.
- A fix for the DMA coherent code from Marek which uses the wrong
check for atomic allocations; this can result in spinlock lockups
or other nasty effects.
- A fix from Will, which will affect all Android based platforms if
not applied (which use the 2G:2G VM split) - this causes
particularly 'make' to misbehave unless this bug is fixed."
* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
ARM: 7641/1: memory: fix broken mmap by ensuring TASK_UNMAPPED_BASE is aligned
ARM: DMA mapping: fix bad atomic test
ARM: realview: ensure that we have sufficient IRQs available
ARM: GIC: fix GIC cpumask initialization
Diffstat (limited to 'arch')
-rw-r--r-- | arch/arm/common/gic.c | 25 | ||||
-rw-r--r-- | arch/arm/include/asm/memory.h | 2 | ||||
-rw-r--r-- | arch/arm/mach-realview/include/mach/irqs-eb.h | 2 | ||||
-rw-r--r-- | arch/arm/mm/dma-mapping.c | 2 |
4 files changed, 26 insertions, 5 deletions
diff --git a/arch/arm/common/gic.c b/arch/arm/common/gic.c index 36ae03a3f5d..87dfa9026c5 100644 --- a/arch/arm/common/gic.c +++ b/arch/arm/common/gic.c @@ -351,6 +351,25 @@ void __init gic_cascade_irq(unsigned int gic_nr, unsigned int irq) irq_set_chained_handler(irq, gic_handle_cascade_irq); } +static u8 gic_get_cpumask(struct gic_chip_data *gic) +{ + void __iomem *base = gic_data_dist_base(gic); + u32 mask, i; + + for (i = mask = 0; i < 32; i += 4) { + mask = readl_relaxed(base + GIC_DIST_TARGET + i); + mask |= mask >> 16; + mask |= mask >> 8; + if (mask) + break; + } + + if (!mask) + pr_crit("GIC CPU mask not found - kernel will fail to boot.\n"); + + return mask; +} + static void __init gic_dist_init(struct gic_chip_data *gic) { unsigned int i; @@ -369,7 +388,9 @@ static void __init gic_dist_init(struct gic_chip_data *gic) /* * Set all global interrupts to this CPU only. */ - cpumask = readl_relaxed(base + GIC_DIST_TARGET + 0); + cpumask = gic_get_cpumask(gic); + cpumask |= cpumask << 8; + cpumask |= cpumask << 16; for (i = 32; i < gic_irqs; i += 4) writel_relaxed(cpumask, base + GIC_DIST_TARGET + i * 4 / 4); @@ -400,7 +421,7 @@ static void __cpuinit gic_cpu_init(struct gic_chip_data *gic) * Get what the GIC says our CPU mask is. */ BUG_ON(cpu >= NR_GIC_CPU_IF); - cpu_mask = readl_relaxed(dist_base + GIC_DIST_TARGET + 0); + cpu_mask = gic_get_cpumask(gic); gic_cpu_map[cpu] = cpu_mask; /* diff --git a/arch/arm/include/asm/memory.h b/arch/arm/include/asm/memory.h index 73cf03aa981..1c4df27f933 100644 --- a/arch/arm/include/asm/memory.h +++ b/arch/arm/include/asm/memory.h @@ -37,7 +37,7 @@ */ #define PAGE_OFFSET UL(CONFIG_PAGE_OFFSET) #define TASK_SIZE (UL(CONFIG_PAGE_OFFSET) - UL(0x01000000)) -#define TASK_UNMAPPED_BASE (UL(CONFIG_PAGE_OFFSET) / 3) +#define TASK_UNMAPPED_BASE ALIGN(TASK_SIZE / 3, SZ_16M) /* * The maximum size of a 26-bit user space task. diff --git a/arch/arm/mach-realview/include/mach/irqs-eb.h b/arch/arm/mach-realview/include/mach/irqs-eb.h index d6b5073692d..44754230fdc 100644 --- a/arch/arm/mach-realview/include/mach/irqs-eb.h +++ b/arch/arm/mach-realview/include/mach/irqs-eb.h @@ -115,7 +115,7 @@ /* * Only define NR_IRQS if less than NR_IRQS_EB */ -#define NR_IRQS_EB (IRQ_EB_GIC_START + 96) +#define NR_IRQS_EB (IRQ_EB_GIC_START + 128) #if defined(CONFIG_MACH_REALVIEW_EB) \ && (!defined(NR_IRQS) || (NR_IRQS < NR_IRQS_EB)) diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c index 076c26d4386..dda3904dc64 100644 --- a/arch/arm/mm/dma-mapping.c +++ b/arch/arm/mm/dma-mapping.c @@ -640,7 +640,7 @@ static void *__dma_alloc(struct device *dev, size_t size, dma_addr_t *handle, if (is_coherent || nommu()) addr = __alloc_simple_buffer(dev, size, gfp, &page); - else if (gfp & GFP_ATOMIC) + else if (!(gfp & __GFP_WAIT)) addr = __alloc_from_pool(size, &page); else if (!IS_ENABLED(CONFIG_CMA)) addr = __alloc_remap_buffer(dev, size, gfp, prot, &page, caller); |