diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index 5d547d038fd18d..5378fe43d8188a 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -314,11 +314,13 @@ static void spi_statistics_add_transfer_stats(struct spi_statistics *pcpu_stats, struct spi_controller *ctlr) { int l2len = min(fls(xfer->len), SPI_STATISTICS_HISTO_SIZE) - 1; - struct spi_statistics *stats = this_cpu_ptr(pcpu_stats); + struct spi_statistics *stats; if (l2len < 0) l2len = 0; + get_cpu(); + stats = this_cpu_ptr(pcpu_stats); u64_stats_update_begin(&stats->syncp); u64_stats_inc(&stats->transfers); @@ -333,6 +335,7 @@ static void spi_statistics_add_transfer_stats(struct spi_statistics *pcpu_stats, u64_stats_add(&stats->bytes_rx, xfer->len); u64_stats_update_end(&stats->syncp); + put_cpu(); } /* diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h index 0e78ba036d5750..fce16d913fb0a9 100644 --- a/include/linux/spi/spi.h +++ b/include/linux/spi/spi.h @@ -83,18 +83,24 @@ struct spi_statistics { #define SPI_STATISTICS_ADD_TO_FIELD(pcpu_stats, field, count) \ do { \ - struct spi_statistics *__lstats = this_cpu_ptr(pcpu_stats); \ + struct spi_statistics *__lstats; \ + get_cpu(); \ + __lstats = this_cpu_ptr(pcpu_stats); \ u64_stats_update_begin(&__lstats->syncp); \ u64_stats_add(&__lstats->field, count); \ u64_stats_update_end(&__lstats->syncp); \ + put_cpu(); \ } while (0) #define SPI_STATISTICS_INCREMENT_FIELD(pcpu_stats, field) \ do { \ - struct spi_statistics *__lstats = this_cpu_ptr(pcpu_stats); \ + struct spi_statistics *__lstats; \ + get_cpu(); \ + __lstats = this_cpu_ptr(pcpu_stats); \ u64_stats_update_begin(&__lstats->syncp); \ u64_stats_inc(&__lstats->field); \ u64_stats_update_end(&__lstats->syncp); \ + put_cpu(); \ } while (0) /**