diff options
| -rw-r--r-- | drivers/firewire/ohci.c | 30 |
1 files changed, 12 insertions, 18 deletions
diff --git a/drivers/firewire/ohci.c b/drivers/firewire/ohci.c index 1461e008d265..5cb7c7603c2c 100644 --- a/drivers/firewire/ohci.c +++ b/drivers/firewire/ohci.c @@ -2300,9 +2300,8 @@ static irqreturn_t irq_handler(int irq, void *data) handle_dead_contexts(ohci); if (event & OHCI1394_cycle64Seconds) { - spin_lock(&ohci->lock); + guard(spinlock)(&ohci->lock); update_bus_time(ohci); - spin_unlock(&ohci->lock); } else flush_writes(ohci); @@ -2762,7 +2761,6 @@ static int ohci_enable_phys_dma(struct fw_card *card, static u32 ohci_read_csr(struct fw_card *card, int csr_offset) { struct fw_ohci *ohci = fw_ohci(card); - unsigned long flags; u32 value; switch (csr_offset) { @@ -2786,16 +2784,14 @@ static u32 ohci_read_csr(struct fw_card *card, int csr_offset) return get_cycle_time(ohci); case CSR_BUS_TIME: - /* - * We might be called just after the cycle timer has wrapped - * around but just before the cycle64Seconds handler, so we - * better check here, too, if the bus time needs to be updated. - */ - spin_lock_irqsave(&ohci->lock, flags); - value = update_bus_time(ohci); - spin_unlock_irqrestore(&ohci->lock, flags); - return value; + { + // We might be called just after the cycle timer has wrapped around but just before + // the cycle64Seconds handler, so we better check here, too, if the bus time needs + // to be updated. + guard(spinlock_irqsave)(&ohci->lock); + return update_bus_time(ohci); + } case CSR_BUSY_TIMEOUT: value = reg_read(ohci, OHCI1394_ATRetries); return (value >> 4) & 0x0ffff00f; @@ -2813,7 +2809,6 @@ static u32 ohci_read_csr(struct fw_card *card, int csr_offset) static void ohci_write_csr(struct fw_card *card, int csr_offset, u32 value) { struct fw_ohci *ohci = fw_ohci(card); - unsigned long flags; switch (csr_offset) { case CSR_STATE_CLEAR: @@ -2849,12 +2844,11 @@ static void ohci_write_csr(struct fw_card *card, int csr_offset, u32 value) break; case CSR_BUS_TIME: - spin_lock_irqsave(&ohci->lock, flags); - ohci->bus_time = (update_bus_time(ohci) & 0x40) | - (value & ~0x7f); - spin_unlock_irqrestore(&ohci->lock, flags); + { + guard(spinlock_irqsave)(&ohci->lock); + ohci->bus_time = (update_bus_time(ohci) & 0x40) | (value & ~0x7f); break; - + } case CSR_BUSY_TIMEOUT: value = (value & 0xf) | ((value & 0xf) << 4) | ((value & 0xf) << 8) | ((value & 0x0ffff000) << 4); |