diff options
Diffstat (limited to 'lib/genalloc.c')
| -rw-r--r-- | lib/genalloc.c | 29 |
1 files changed, 16 insertions, 13 deletions
diff --git a/lib/genalloc.c b/lib/genalloc.c index 00fc50d0a640..841f29783833 100644 --- a/lib/genalloc.c +++ b/lib/genalloc.c @@ -32,7 +32,9 @@ #include <linux/rculist.h> #include <linux/interrupt.h> #include <linux/genalloc.h> -#include <linux/of_device.h> +#include <linux/of.h> +#include <linux/of_platform.h> +#include <linux/platform_device.h> #include <linux/vmalloc.h> static inline size_t chunk_size(const struct gen_pool_chunk *chunk) @@ -40,32 +42,30 @@ static inline size_t chunk_size(const struct gen_pool_chunk *chunk) return chunk->end_addr - chunk->start_addr + 1; } -static int set_bits_ll(unsigned long *addr, unsigned long mask_to_set) +static inline int +set_bits_ll(unsigned long *addr, unsigned long mask_to_set) { - unsigned long val, nval; + unsigned long val = READ_ONCE(*addr); - nval = *addr; do { - val = nval; if (val & mask_to_set) return -EBUSY; cpu_relax(); - } while ((nval = cmpxchg(addr, val, val | mask_to_set)) != val); + } while (!try_cmpxchg(addr, &val, val | mask_to_set)); return 0; } -static int clear_bits_ll(unsigned long *addr, unsigned long mask_to_clear) +static inline int +clear_bits_ll(unsigned long *addr, unsigned long mask_to_clear) { - unsigned long val, nval; + unsigned long val = READ_ONCE(*addr); - nval = *addr; do { - val = nval; if ((val & mask_to_clear) != mask_to_clear) return -EBUSY; cpu_relax(); - } while ((nval = cmpxchg(addr, val, val & ~mask_to_clear)) != val); + } while (!try_cmpxchg(addr, &val, val & ~mask_to_clear)); return 0; } @@ -897,10 +897,13 @@ struct gen_pool *of_gen_pool_get(struct device_node *np, of_property_read_string(np_pool, "label", &name); if (!name) - name = np_pool->name; + name = of_node_full_name(np_pool); } - if (pdev) + if (pdev) { pool = gen_pool_get(&pdev->dev, name); + put_device(&pdev->dev); + } + of_node_put(np_pool); return pool; |