diff options
author | Ondrej Zary <linux@rainbow-software.org> | 2015-11-17 19:24:23 +0100 |
---|---|---|
committer | Martin K. Petersen <martin.petersen@oracle.com> | 2015-11-25 22:08:52 -0500 |
commit | 1729c0d22bddfa949551c38301af3ce52d40c3b9 (patch) | |
tree | 4c0dd988850739568d825fadb083b1f07f8a8179 | |
parent | 11ec131804e75b73f07ac04f94888efc65c5d4c4 (diff) | |
download | linux-stable-1729c0d22bddfa949551c38301af3ce52d40c3b9.tar.gz linux-stable-1729c0d22bddfa949551c38301af3ce52d40c3b9.tar.bz2 linux-stable-1729c0d22bddfa949551c38301af3ce52d40c3b9.zip |
atp870u: Request IRQ later, remove weird locking
Allocate IRQ later during probe to avoid code duplication and also
remove the need for weird locking in _probe.
(It was probably there to prevent race with the IRQ handler?)
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>
-rw-r--r-- | drivers/scsi/atp870u.c | 47 |
1 files changed, 12 insertions, 35 deletions
diff --git a/drivers/scsi/atp870u.c b/drivers/scsi/atp870u.c index 87dd8867106c..4719df4a2a06 100644 --- a/drivers/scsi/atp870u.c +++ b/drivers/scsi/atp870u.c @@ -1253,7 +1253,6 @@ static void atp_set_host_id(struct atp_unit *atp, u8 c, u8 host_id) static int atp870u_probe(struct pci_dev *pdev, const struct pci_device_id *ent) { unsigned char k, m, c; - unsigned long flags; unsigned int error,n; unsigned char host_id; struct Scsi_Host *shpnt = NULL; @@ -1374,13 +1373,6 @@ flash_ok_880: goto unregister; } - err = request_irq(shpnt->irq, atp870u_intr_handle, IRQF_SHARED, "atp880i", shpnt); - if (err) { - printk(KERN_ERR "Unable to allocate IRQ%d for Acard controller.\n", shpnt->irq); - goto free_tables; - } - - spin_lock_irqsave(shpnt->host_lock, flags); k = atp_readb_base(atpdev, 0x38) & 0x80; atp_writeb_base(atpdev, 0x38, k); atp_writeb_base(atpdev, 0x3b, 0x20); @@ -1412,17 +1404,6 @@ flash_ok_880: goto unregister; } -#ifdef ED_DBGP - printk("request_irq() shpnt %p hostdata %p\n", shpnt, atpdev); -#endif - err = request_irq(shpnt->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(atpdev, 0x29); atp_writeb_base(atpdev, 0x29, c | 0x04); @@ -1558,13 +1539,6 @@ flash_ok_885: goto unregister; } - err = request_irq(shpnt->irq, atp870u_intr_handle, IRQF_SHARED, "atp870i", shpnt); - if (err) { - printk(KERN_ERR "Unable to allocate IRQ%d for Acard controller.\n", shpnt->irq); - goto free_tables; - } - - spin_lock_irqsave(shpnt->host_lock, flags); if (pdev->revision > 0x07) /* check if atp876 chip then enable terminator */ atp_writeb_base(atpdev, 0x3e, 0x00); @@ -1586,15 +1560,18 @@ flash_ok_885: shpnt->this_id = host_id; } - spin_unlock_irqrestore(shpnt->host_lock, flags); - err = scsi_add_host(shpnt, &pdev->dev); - if (err) - goto scsi_add_fail; - scsi_scan_host(shpnt); -#ifdef ED_DBGP - printk("atp870u_prob : exit\n"); -#endif - return 0; + err = request_irq(shpnt->irq, atp870u_intr_handle, IRQF_SHARED, "atp870u", shpnt); + if (err) { + dev_err(&pdev->dev, "Unable to allocate IRQ %d.\n", shpnt->irq); + goto free_tables; + } + + err = scsi_add_host(shpnt, &pdev->dev); + if (err) + goto scsi_add_fail; + scsi_scan_host(shpnt); + + return 0; scsi_add_fail: free_irq(shpnt->irq, shpnt); |