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atp870u: Improve _probe() 

Move scsi_host_alloc() to the top of _probe() to remove code duplication,
*p and unneeded atpdev (de)allocation and copying.  While at it, fix the
error paths to return real error codes and also add missing
pci_disble_device() call.

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>
hifive-unleashed-5.1
Ondrej Zary 2015-11-17 19:24:17 +01:00 committed by Martin K. Petersen
parent e1e9a70642
commit bdd5ac4065
1 changed files with 113 additions and 123 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

236
drivers/scsi/atp870u.c
View File

@ -1248,29 +1248,41 @@ static int atp870u_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
unsigned int base_io, error,n;
unsigned char host_id;
struct Scsi_Host *shpnt = NULL;
struct atp_unit *atpdev, *p;
struct atp_unit *atpdev;
unsigned char setupdata[2][16];
int err;
atpdev = kzalloc(sizeof(*atpdev), GFP_KERNEL);
if (!atpdev)
return -ENOMEM;
if (pci_enable_device(pdev))
goto err_eio;
err = pci_enable_device(pdev);
if (err)
goto fail;
if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
printk(KERN_ERR "atp870u: DMA mask required but not available.\n");
goto err_eio;
err = -EIO;
goto disable_device;
}
err = -ENOMEM;
shpnt = scsi_host_alloc(&atp870u_template, sizeof(struct atp_unit));
if (!shpnt)
goto disable_device;
atpdev = shost_priv(shpnt);
atpdev->host = shpnt;
atpdev->pdev = pdev;
pci_set_drvdata(pdev, atpdev);
/*
* It's probably easier to weed out some revisions like
* this than via the PCI device table
*/
if (ent->device == PCI_DEVICE_ID_ARTOP_AEC7610) {
atpdev->chip_ver = pdev->revision;
if (atpdev->chip_ver < 2)
goto err_eio;
if (atpdev->chip_ver < 2) {
err = -ENODEV;
goto unregister;
}
}
switch (ent->device) {
@ -1358,41 +1370,33 @@ flash_ok_880:
atpdev->async[0] = ~(atpdev->async[0]);
atp_writeb_base(atpdev, 0x35, atpdev->global_map[0]);
shpnt = scsi_host_alloc(&atp870u_template, sizeof(struct atp_unit));
if (!shpnt)
goto err_nomem;
p = (struct atp_unit *)&shpnt->hostdata;
atpdev->host = shpnt;
atpdev->pdev = pdev;
pci_set_drvdata(pdev, p);
memcpy(p, atpdev, sizeof(*atpdev));
if (atp870u_init_tables(shpnt) < 0) {
printk(KERN_ERR "Unable to allocate tables for Acard controller\n");
err = -ENOMEM;
goto unregister;
}
if (request_irq(pdev->irq, atp870u_intr_handle, IRQF_SHARED, "atp880i", shpnt)) {
err = request_irq(pdev->irq, atp870u_intr_handle, IRQF_SHARED, "atp880i", shpnt);
if (err) {
printk(KERN_ERR "Unable to allocate IRQ%d for Acard controller.\n", pdev->irq);
goto free_tables;
}
spin_lock_irqsave(shpnt->host_lock, flags);
k = atp_readb_base(p, 0x38) & 0x80;
atp_writeb_base(p, 0x38, k);
atp_writeb_base(p, 0x3b, 0x20);
k = atp_readb_base(atpdev, 0x38) & 0x80;
atp_writeb_base(atpdev, 0x38, k);
atp_writeb_base(atpdev, 0x3b, 0x20);
mdelay(32);
atp_writeb_base(p, 0x3b, 0);
atp_writeb_base(atpdev, 0x3b, 0);
mdelay(32);
atp_readb_io(p, 0, 0x1b);
atp_readb_io(p, 0, 0x17);
atp_readb_io(atpdev, 0, 0x1b);
atp_readb_io(atpdev, 0, 0x17);
atp_set_host_id(p, 0, host_id);
atp_set_host_id(atpdev, 0, host_id);
tscam(shpnt);
atp_is(p, 0, true, atp_readb_base(p, 0x3f) & 0x40);
atp_writeb_base(p, 0x38, 0xb0);
atp_is(atpdev, 0, true, atp_readb_base(atpdev, 0x3f) & 0x40);
atp_writeb_base(atpdev, 0x38, 0xb0);
shpnt->max_id = 16;
shpnt->this_id = host_id;
shpnt->unique_id = base_io;
@ -1410,50 +1414,43 @@ flash_ok_880:
atpdev->pciport[0] = base_io + 0x40;
atpdev->pciport[1] = base_io + 0x50;
shpnt = scsi_host_alloc(&atp870u_template, sizeof(struct atp_unit));
if (!shpnt)
goto err_nomem;
p = (struct atp_unit *)&shpnt->hostdata;
atpdev->host = shpnt;
atpdev->pdev = pdev;
pci_set_drvdata(pdev, p);
memcpy(p, atpdev, sizeof(struct atp_unit));
if (atp870u_init_tables(shpnt) < 0)
if (atp870u_init_tables(shpnt) < 0) {
err = -ENOMEM;
goto unregister;
}
#ifdef ED_DBGP
printk("request_irq() shpnt %p hostdata %p\n", shpnt, p);
printk("request_irq() shpnt %p hostdata %p\n", shpnt, atpdev);
#endif
if (request_irq(pdev->irq, atp870u_intr_handle, IRQF_SHARED, "atp870u", shpnt)) {
err = request_irq(pdev->irq, atp870u_intr_handle, IRQF_SHARED, "atp870u", shpnt);
if (err) {
printk(KERN_ERR "Unable to allocate IRQ for Acard controller.\n");
goto free_tables;
}
spin_lock_irqsave(shpnt->host_lock, flags);
c = atp_readb_base(p, 0x29);
atp_writeb_base(p, 0x29, c | 0x04);
c = atp_readb_base(atpdev, 0x29);
atp_writeb_base(atpdev, 0x29, c | 0x04);
n=0x1f80;
next_fblk_885:
if (n >= 0x2000) {
goto flash_ok_885;
}
atp_writew_base(p, 0x3c, n);
if (atp_readl_base(p, 0x38) == 0xffffffff) {
atp_writew_base(atpdev, 0x3c, n);
if (atp_readl_base(atpdev, 0x38) == 0xffffffff) {
goto flash_ok_885;
}
for (m=0; m < 2; m++) {
p->global_map[m]= 0;
atpdev->global_map[m]= 0;
for (k=0; k < 4; k++) {
atp_writew_base(p, 0x3c, n++);
((unsigned long *)&setupdata[m][0])[k] = atp_readl_base(p, 0x38);
atp_writew_base(atpdev, 0x3c, n++);
((unsigned long *)&setupdata[m][0])[k] = atp_readl_base(atpdev, 0x38);
}
for (k=0; k < 4; k++) {
atp_writew_base(p, 0x3c, n++);
((unsigned long *)&p->sp[m][0])[k] = atp_readl_base(p, 0x38);
atp_writew_base(atpdev, 0x3c, n++);
((unsigned long *)&atpdev->sp[m][0])[k] = atp_readl_base(atpdev, 0x38);
}
n += 8;
}
@ -1462,81 +1459,81 @@ flash_ok_885:
#ifdef ED_DBGP
printk( "Flash Read OK\n");
#endif
c = atp_readb_base(p, 0x29);
atp_writeb_base(p, 0x29, c & 0xfb);
c = atp_readb_base(atpdev, 0x29);
atp_writeb_base(atpdev, 0x29, c & 0xfb);
for (c=0;c < 2;c++) {
p->ultra_map[c]=0;
p->async[c] = 0;
atpdev->ultra_map[c]=0;
atpdev->async[c] = 0;
for (k=0; k < 16; k++) {
n=1;
n = n << k;
if (p->sp[c][k] > 1) {
p->ultra_map[c] |= n;
if (atpdev->sp[c][k] > 1) {
atpdev->ultra_map[c] |= n;
} else {
if (p->sp[c][k] == 0) {
p->async[c] |= n;
if (atpdev->sp[c][k] == 0) {
atpdev->async[c] |= n;
}
}
}
p->async[c] = ~(p->async[c]);
atpdev->async[c] = ~(atpdev->async[c]);
if (p->global_map[c] == 0) {
if (atpdev->global_map[c] == 0) {
k=setupdata[c][1];
if ((k & 0x40) != 0)
p->global_map[c] |= 0x20;
atpdev->global_map[c] |= 0x20;
k &= 0x07;
p->global_map[c] |= k;
atpdev->global_map[c] |= k;
if ((setupdata[c][2] & 0x04) != 0)
p->global_map[c] |= 0x08;
p->host_id[c] = setupdata[c][0] & 0x07;
atpdev->global_map[c] |= 0x08;
atpdev->host_id[c] = setupdata[c][0] & 0x07;
}
}
k = atp_readb_base(p, 0x28) & 0x8f;
k = atp_readb_base(atpdev, 0x28) & 0x8f;
k |= 0x10;
atp_writeb_base(p, 0x28, k);
atp_writeb_pci(p, 0, 1, 0x80);
atp_writeb_pci(p, 1, 1, 0x80);
atp_writeb_base(atpdev, 0x28, k);
atp_writeb_pci(atpdev, 0, 1, 0x80);
atp_writeb_pci(atpdev, 1, 1, 0x80);
mdelay(100);
atp_writeb_pci(p, 0, 1, 0);
atp_writeb_pci(p, 1, 1, 0);
atp_writeb_pci(atpdev, 0, 1, 0);
atp_writeb_pci(atpdev, 1, 1, 0);
mdelay(1000);
atp_readb_io(p, 0, 0x1b);
atp_readb_io(p, 0, 0x17);
atp_readb_io(p, 1, 0x1b);
atp_readb_io(p, 1, 0x17);
atp_readb_io(atpdev, 0, 0x1b);
atp_readb_io(atpdev, 0, 0x17);
atp_readb_io(atpdev, 1, 0x1b);
atp_readb_io(atpdev, 1, 0x17);
k=p->host_id[0];
k=atpdev->host_id[0];
if (k > 7)
k = (k & 0x07) | 0x40;
atp_set_host_id(p, 0, k);
atp_set_host_id(atpdev, 0, k);
k=p->host_id[1];
k=atpdev->host_id[1];
if (k > 7)
k = (k & 0x07) | 0x40;
atp_set_host_id(p, 1, k);
atp_set_host_id(atpdev, 1, k);
mdelay(600); /* this delay used to be called tscam_885() */
printk(KERN_INFO " Scanning Channel A SCSI Device ...\n");
atp_is(p, 0, true, atp_readb_io(p, 0, 0x1b) >> 7);
atp_writeb_io(p, 0, 0x16, 0x80);
atp_is(atpdev, 0, true, atp_readb_io(atpdev, 0, 0x1b) >> 7);
atp_writeb_io(atpdev, 0, 0x16, 0x80);
printk(KERN_INFO " Scanning Channel B SCSI Device ...\n");
atp_is(p, 1, true, atp_readb_io(p, 1, 0x1b) >> 7);
atp_writeb_io(p, 1, 0x16, 0x80);
k = atp_readb_base(p, 0x28) & 0xcf;
atp_is(atpdev, 1, true, atp_readb_io(atpdev, 1, 0x1b) >> 7);
atp_writeb_io(atpdev, 1, 0x16, 0x80);
k = atp_readb_base(atpdev, 0x28) & 0xcf;
k |= 0xc0;
atp_writeb_base(p, 0x28, k);
k = atp_readb_base(p, 0x1f) | 0x80;
atp_writeb_base(p, 0x1f, k);
k = atp_readb_base(p, 0x29) | 0x01;
atp_writeb_base(p, 0x29, k);
atp_writeb_base(atpdev, 0x28, k);
k = atp_readb_base(atpdev, 0x1f) | 0x80;
atp_writeb_base(atpdev, 0x1f, k);
k = atp_readb_base(atpdev, 0x29) | 0x01;
atp_writeb_base(atpdev, 0x29, k);
#ifdef ED_DBGP
//printk("atp885: atp_host[0] 0x%p\n", atp_host[0]);
#endif
shpnt->max_id = 16;
shpnt->max_lun = (p->global_map[0] & 0x07) + 1;
shpnt->max_lun = (atpdev->global_map[0] & 0x07) + 1;
shpnt->max_channel = 1;
shpnt->this_id = p->host_id[0];
shpnt->this_id = atpdev->host_id[0];
shpnt->unique_id = base_io;
shpnt->io_port = base_io;
shpnt->n_io_port = 0xff; /* Number of bytes of I/O space used */
@ -1563,41 +1560,35 @@ flash_ok_885:
atpdev->ultra_map[0] = 0xffff;
}
shpnt = scsi_host_alloc(&atp870u_template, sizeof(struct atp_unit));
if (!shpnt)
goto err_nomem;
p = (struct atp_unit *)&shpnt->hostdata;
atpdev->host = shpnt;
atpdev->pdev = pdev;
pci_set_drvdata(pdev, p);
memcpy(p, atpdev, sizeof(*atpdev));
if (atp870u_init_tables(shpnt) < 0)
if (atp870u_init_tables(shpnt) < 0) {
err = -ENOMEM;
goto unregister;
}
if (request_irq(pdev->irq, atp870u_intr_handle, IRQF_SHARED, "atp870i", shpnt)) {
err = request_irq(pdev->irq, atp870u_intr_handle, IRQF_SHARED, "atp870i", shpnt);
if (err) {
printk(KERN_ERR "Unable to allocate IRQ%d for Acard controller.\n", pdev->irq);
goto free_tables;
}
spin_lock_irqsave(shpnt->host_lock, flags);
if (atpdev->chip_ver > 0x07) /* check if atp876 chip then enable terminator */
atp_writeb_base(p, 0x3e, 0x00);
atp_writeb_base(atpdev, 0x3e, 0x00);
k = (atp_readb_base(p, 0x3a) & 0xf3) | 0x10;
atp_writeb_base(p, 0x3a, k);
atp_writeb_base(p, 0x3a, k & 0xdf);
k = (atp_readb_base(atpdev, 0x3a) & 0xf3) | 0x10;
atp_writeb_base(atpdev, 0x3a, k);
atp_writeb_base(atpdev, 0x3a, k & 0xdf);
mdelay(32);
atp_writeb_base(p, 0x3a, k);
atp_writeb_base(atpdev, 0x3a, k);
mdelay(32);
atp_set_host_id(p, 0, host_id);
atp_set_host_id(atpdev, 0, host_id);
tscam(shpnt);
atp_writeb_base(p, 0x3a, atp_readb_base(p, 0x3a) | 0x10);
atp_is(p, 0, p->chip_ver == 4, 0);
atp_writeb_base(p, 0x3a, atp_readb_base(p, 0x3a) & 0xef);
atp_writeb_base(p, 0x3b, atp_readb_base(p, 0x3b) | 0x20);
atp_writeb_base(atpdev, 0x3a, atp_readb_base(atpdev, 0x3a) | 0x10);
atp_is(atpdev, 0, atpdev->chip_ver == 4, 0);
atp_writeb_base(atpdev, 0x3a, atp_readb_base(atpdev, 0x3a) & 0xef);
atp_writeb_base(atpdev, 0x3b, atp_readb_base(atpdev, 0x3b) | 0x20);
if (atpdev->chip_ver == 4)
shpnt->max_id = 16;
else
@ -1609,9 +1600,12 @@ flash_ok_885:
shpnt->irq = pdev->irq;
}
spin_unlock_irqrestore(shpnt->host_lock, flags);
if (!request_region(base_io, shpnt->n_io_port, "atp870u"))
if (!request_region(base_io, shpnt->n_io_port, "atp870u")) {
err = -EBUSY;
goto request_io_fail;
if (scsi_add_host(shpnt, &pdev->dev))
}
err = scsi_add_host(shpnt, &pdev->dev);
if (err)
goto scsi_add_fail;
scsi_scan_host(shpnt);
#ifdef ED_DBGP
@ -1629,15 +1623,11 @@ free_tables:
printk("atp870u_prob:free_table\n");
atp870u_free_tables(shpnt);
unregister:
printk("atp870u_prob:unregister\n");
scsi_host_put(shpnt);
return -1;
err_eio:
kfree(atpdev);
return -EIO;
err_nomem:
kfree(atpdev);
return -ENOMEM;
disable_device:
pci_disable_device(pdev);
fail:
return err;
}
/* The abort command does not leave the device in a clean state where