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authorFinn Thain <fthain@telegraphics.com.au>2011-09-11 11:57:51 +0200
committerJames Bottomley <JBottomley@Parallels.com>2011-09-22 13:10:18 +0200
commite544d704f9bea6892808e453e219aa305bc0269a (patch)
treeb4efe460d420926ea31bb61f487ef8e2066ef3ae
parent[SCSI] mpt2sas: Bump driver version 09.100.00.01 (diff)
downloadlinux-e544d704f9bea6892808e453e219aa305bc0269a.tar.xz
linux-e544d704f9bea6892808e453e219aa305bc0269a.zip
[SCSI] mac_esp: remove redundant mutual exclusion
Mutual exclusion is redundant here because all the paths in the call graph leading to esp_driver_ops.send_dma_cmd() happen under spin_lock_irqsave/ spin_lock_irqrestore. Remove it. Tested on a Mac Quadra 660av and a Mac LC 630. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
-rw-r--r--drivers/scsi/mac_esp.c9
1 files changed, 0 insertions, 9 deletions
diff --git a/drivers/scsi/mac_esp.c b/drivers/scsi/mac_esp.c
index 3893337e3dd3..590ce1ef2016 100644
--- a/drivers/scsi/mac_esp.c
+++ b/drivers/scsi/mac_esp.c
@@ -230,9 +230,6 @@ static void mac_esp_send_pdma_cmd(struct esp *esp, u32 addr, u32 esp_count,
u32 dma_count, int write, u8 cmd)
{
struct mac_esp_priv *mep = MAC_ESP_GET_PRIV(esp);
- unsigned long flags;
-
- local_irq_save(flags);
mep->error = 0;
@@ -270,8 +267,6 @@ static void mac_esp_send_pdma_cmd(struct esp *esp, u32 addr, u32 esp_count,
esp_count = n;
}
} while (esp_count);
-
- local_irq_restore(flags);
}
/*
@@ -353,8 +348,6 @@ static void mac_esp_send_pio_cmd(struct esp *esp, u32 addr, u32 esp_count,
struct mac_esp_priv *mep = MAC_ESP_GET_PRIV(esp);
u8 *fifo = esp->regs + ESP_FDATA * 16;
- disable_irq(esp->host->irq);
-
cmd &= ~ESP_CMD_DMA;
mep->error = 0;
@@ -431,8 +424,6 @@ static void mac_esp_send_pio_cmd(struct esp *esp, u32 addr, u32 esp_count,
scsi_esp_cmd(esp, ESP_CMD_TI);
}
}
-
- enable_irq(esp->host->irq);
}
static int mac_esp_irq_pending(struct esp *esp)