Merge branch 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm

Pull ARM fixes from Russell King:
 "A small set of ARM fixes for -rc3, most of them not far off
  one-liners, with the exception of fixing the V7 cache invalidation for
  incoming SMP processors which was causing problems for SoCFPGA
  devices"

* 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
  ARM: fix __virt_to_idmap build error on !MMU
  ARM: invalidate L1 before enabling coherency
  ARM: 8404/1: dma-mapping: fix off-by-one error in bitmap size check
  ARM: 8402/1: perf: Don't use of_node after putting it
  ARM: 8400/1: use virt_to_idmap to get phys_reset address

diff --git a/arch/arm/include/asm/memory.h b/arch/arm/include/asm/memory.h
index 6f225acc07c56bdef12a3ca68ae526d8fe836bf4..b7f6fb462ea0da21e59e67dbb4e75de729ffdfcc 100644 (file)
--- a/arch/arm/include/asm/memory.h
+++ b/arch/arm/include/asm/memory.h
@@ -286,7 +286,7 @@ extern phys_addr_t (*arch_virt_to_idmap)(unsigned long x);
  */
 static inline phys_addr_t __virt_to_idmap(unsigned long x)
 {
-       if (arch_virt_to_idmap)
+       if (IS_ENABLED(CONFIG_MMU) && arch_virt_to_idmap)
                return arch_virt_to_idmap(x);
        else
                return __virt_to_phys(x);

diff --git a/arch/arm/kernel/perf_event.c b/arch/arm/kernel/perf_event.c
index 357f57ea83f4b82fe0712c7af9a06d677be34d18..54272e0be7137c853f2d684d236449157ef55193 100644 (file)
--- a/arch/arm/kernel/perf_event.c
+++ b/arch/arm/kernel/perf_event.c
@@ -818,12 +818,13 @@ static int of_pmu_irq_cfg(struct arm_pmu *pmu)
                        if (arch_find_n_match_cpu_physical_id(dn, cpu, NULL))
                                break;
 
-               of_node_put(dn);
                if (cpu >= nr_cpu_ids) {
                        pr_warn("Failed to find logical CPU for %s\n",
                                dn->name);
+                       of_node_put(dn);
                        break;
                }
+               of_node_put(dn);
 
                irqs[i] = cpu;
                cpumask_set_cpu(cpu, &pmu->supported_cpus);

diff --git a/arch/arm/kernel/reboot.c b/arch/arm/kernel/reboot.c
index 1a4d232796be67787a305fabb35a1955fe909f94..38269358fd252c6bb93fd58a0478319c436cdfd3 100644 (file)
--- a/arch/arm/kernel/reboot.c
+++ b/arch/arm/kernel/reboot.c
@@ -50,7 +50,7 @@ static void __soft_restart(void *addr)
        flush_cache_all();
 
        /* Switch to the identity mapping. */
-       phys_reset = (phys_reset_t)(unsigned long)virt_to_phys(cpu_reset);
+       phys_reset = (phys_reset_t)(unsigned long)virt_to_idmap(cpu_reset);
        phys_reset((unsigned long)addr);
 
        /* Should never get here. */

diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index 1ced8a0f7a52624cae84203eb0d3417aed5171db..cba12f34ff774ca08216c5d2b6061b07b68b1a99 100644 (file)
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -1971,7 +1971,7 @@ static int extend_iommu_mapping(struct dma_iommu_mapping *mapping)
 {
        int next_bitmap;
 
-       if (mapping->nr_bitmaps > mapping->extensions)
+       if (mapping->nr_bitmaps >= mapping->extensions)
                return -EINVAL;
 
        next_bitmap = mapping->nr_bitmaps;

diff --git a/arch/arm/mm/proc-v7.S b/arch/arm/mm/proc-v7.S
index 0716bbe198728876e81361897b69258e3489bf24..de2b246fed3808fce444b560a725ed4007464174 100644 (file)
--- a/arch/arm/mm/proc-v7.S
+++ b/arch/arm/mm/proc-v7.S
@@ -274,7 +274,10 @@ __v7_ca15mp_setup:
 __v7_b15mp_setup:
 __v7_ca17mp_setup:
        mov     r10, #0
-1:
+1:     adr     r12, __v7_setup_stack           @ the local stack
+       stmia   r12, {r0-r5, lr}                @ v7_invalidate_l1 touches r0-r6
+       bl      v7_invalidate_l1
+       ldmia   r12, {r0-r5, lr}
 #ifdef CONFIG_SMP
        ALT_SMP(mrc     p15, 0, r0, c1, c0, 1)
        ALT_UP(mov      r0, #(1 << 6))          @ fake it for UP
@@ -283,7 +286,7 @@ __v7_ca17mp_setup:
        orreq   r0, r0, r10                     @ Enable CPU-specific SMP bits
        mcreq   p15, 0, r0, c1, c0, 1
 #endif
-       b       __v7_setup
+       b       __v7_setup_cont
 
 /*
  * Errata:
@@ -413,10 +416,11 @@ __v7_pj4b_setup:
 
 __v7_setup:
        adr     r12, __v7_setup_stack           @ the local stack
-       stmia   r12, {r0-r5, r7, r9, r11, lr}
+       stmia   r12, {r0-r5, lr}                @ v7_invalidate_l1 touches r0-r6
        bl      v7_invalidate_l1
-       ldmia   r12, {r0-r5, r7, r9, r11, lr}
+       ldmia   r12, {r0-r5, lr}
 
+__v7_setup_cont:
        and     r0, r9, #0xff000000             @ ARM?
        teq     r0, #0x41000000
        bne     __errata_finish
@@ -480,7 +484,7 @@ ENDPROC(__v7_setup)
 
        .align  2
 __v7_setup_stack:
-       .space  4 * 11                          @ 11 registers
+       .space  4 * 7                           @ 12 registers
 
        __INITDATA