atp870u: Remove scam_on from struct atp_unit

scam_on is used only during probe, no need to keep it later.

Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Reviewed-by: Hannes Reinicke <hare@suse.de>
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/atp870u.c b/drivers/scsi/atp870u.c
index 4719df4..dd0b520 100644 (file)
--- a/drivers/scsi/atp870u.c
+++ b/drivers/scsi/atp870u.c
@@ -963,7 +963,7 @@ static unsigned char fun_scam(struct atp_unit *dev, unsigned short int *val)
        return j;
 }
 
-static void tscam(struct Scsi_Host *host, bool wide_chip)
+static void tscam(struct Scsi_Host *host, bool wide_chip, u8 scam_on)
 {
 
        unsigned char i, j, k;
@@ -986,7 +986,7 @@ static void tscam(struct Scsi_Host *host, bool wide_chip)
        atp_writeb_io(dev, 0, 2, 0x7f);
        atp_writeb_io(dev, 0, 0x11, 0x20);
 
-       if ((dev->scam_on & 0x40) == 0) {
+       if ((scam_on & 0x40) == 0) {
                return;
        }
        m = 1;
@@ -1311,7 +1311,6 @@ static int atp870u_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
                        "    IO:%lx, IRQ:%d.\n", shpnt->io_port, shpnt->irq);
                atpdev->host_id[0] = host_id;
 
-               atpdev->scam_on = atp_readb_base(atpdev, 0x22);
                atpdev->global_map[0] = atp_readb_base(atpdev, 0x35);
                atpdev->ultra_map[0] = atp_readw_base(atpdev, 0x3c);
 
@@ -1384,7 +1383,7 @@ flash_ok_880:
 
                atp_set_host_id(atpdev, 0, host_id);
 
-               tscam(shpnt, true);
+               tscam(shpnt, true, atp_readb_base(atpdev, 0x22));
                atp_is(atpdev, 0, true, atp_readb_base(atpdev, 0x3f) & 0x40);
                atp_writeb_base(atpdev, 0x38, 0xb0);
                shpnt->max_id = 16;
@@ -1509,6 +1508,7 @@ flash_ok_885:
                shpnt->max_channel = 1;
                shpnt->this_id = atpdev->host_id[0];
        } else {
+               u8 scam_on;
                bool wide_chip =
                        (ent->device == PCI_DEVICE_ID_ARTOP_AEC7610 &&
                         pdev->revision == 4) ||
@@ -1523,12 +1523,12 @@ flash_ok_885:
                atpdev->pciport[0] = shpnt->io_port + 0x20;
                host_id &= 0x07;
                atpdev->host_id[0] = host_id;
-               atpdev->scam_on = atp_readb_pci(atpdev, 0, 2);
+               scam_on = atp_readb_pci(atpdev, 0, 2);
                atpdev->global_map[0] = atp_readb_base(atpdev, 0x2d);
                atpdev->ultra_map[0] = atp_readw_base(atpdev, 0x2e);
 
                if (atpdev->ultra_map[0] == 0) {
-                       atpdev->scam_on = 0x00;
+                       scam_on = 0x00;
                        atpdev->global_map[0] = 0x20;
                        atpdev->ultra_map[0] = 0xffff;
                }
@@ -1551,7 +1551,7 @@ flash_ok_885:
                atp_set_host_id(atpdev, 0, host_id);
 
 
-               tscam(shpnt, wide_chip);
+               tscam(shpnt, wide_chip, scam_on);
                atp_writeb_base(atpdev, 0x3a, atp_readb_base(atpdev, 0x3a) | 0x10);
                atp_is(atpdev, 0, wide_chip, 0);
                atp_writeb_base(atpdev, 0x3a, atp_readb_base(atpdev, 0x3a) & 0xef);

diff --git a/drivers/scsi/atp870u.h b/drivers/scsi/atp870u.h
index f9d62a2..9b839b1 100644 (file)
--- a/drivers/scsi/atp870u.h
+++ b/drivers/scsi/atp870u.h
@@ -32,7 +32,6 @@ struct atp_unit
        unsigned char quhd[2];
        unsigned char quend[2];
        unsigned char global_map[2];
-       unsigned char scam_on;
        unsigned char host_id[2];
        unsigned int working[2];
        unsigned short wide_id[2];