Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754301Ab0L1R3a (ORCPT ); Tue, 28 Dec 2010 12:29:30 -0500 Received: from mail-bw0-f66.google.com ([209.85.214.66]:47220 "EHLO mail-bw0-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754269Ab0L1R32 (ORCPT ); Tue, 28 Dec 2010 12:29:28 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=sender:from:to:cc:subject:date:message-id:x-mailer:in-reply-to :references; b=cFTV+rhKiFNLVs4ORlVpa8qQcjo3iEUHIyWiGS2F3nP4zXxgDc0slSGhwer3obHOM2 VN3W4cExn9r0eq4W3pO80/cubF1oDTzC/QVcbb0wX+8nTrdmoXAXNpf8ndt/Iz+DdRCB KRpA03ob/nxMuAD/1YTSAr1fuHJavNgYVZ8Qw= From: Tejun Heo To: axboe@kernel.dk, linux-kernel@vger.kernel.org, kay.sievers@vrfy.org, hch@infradead.org Cc: Tejun Heo Subject: [PATCH 05/16] floppy,{ami|ata}flop: convert to bdops->check_events() Date: Tue, 28 Dec 2010 18:29:01 +0100 Message-Id: <1293557352-10592-6-git-send-email-tj@kernel.org> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1293557352-10592-1-git-send-email-tj@kernel.org> References: <1293557352-10592-1-git-send-email-tj@kernel.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 6022 Lines: 175 Convert the floppy drivers from ->media_changed() to ->check_events(). Both floppy and ataflop buffer media changed state bit and clear them on revalidation and will behave correctly with kernel event polling. I can't tell how amiflop clears its event and it's possible that it may generate spurious events when polled. Signed-off-by: Tejun Heo Cc: Jens Axboe Cc: Kay Sievers --- drivers/block/amiflop.c | 9 +++++---- drivers/block/ataflop.c | 14 ++++++++------ drivers/block/floppy.c | 10 ++++++---- 3 files changed, 19 insertions(+), 14 deletions(-) diff --git a/drivers/block/amiflop.c b/drivers/block/amiflop.c index a1725e6..b988cb2 100644 --- a/drivers/block/amiflop.c +++ b/drivers/block/amiflop.c @@ -1658,12 +1658,12 @@ static int floppy_release(struct gendisk *disk, fmode_t mode) } /* - * floppy-change is never called from an interrupt, so we can relax a bit + * check_events is never called from an interrupt, so we can relax a bit * here, sleep etc. Note that floppy-on tries to set current_DOR to point * to the desired drive, but it will probably not survive the sleep if * several floppies are used at the same time: thus the loop. */ -static int amiga_floppy_change(struct gendisk *disk) +static unsigned amiga_check_events(struct gendisk *disk, unsigned int clearing) { struct amiga_floppy_struct *p = disk->private_data; int drive = p - unit; @@ -1686,7 +1686,7 @@ static int amiga_floppy_change(struct gendisk *disk) p->dirty = 0; writepending = 0; /* if this was true before, too bad! */ writefromint = 0; - return 1; + return DISK_EVENT_MEDIA_CHANGE; } return 0; } @@ -1697,7 +1697,7 @@ static const struct block_device_operations floppy_fops = { .release = floppy_release, .ioctl = fd_ioctl, .getgeo = fd_getgeo, - .media_changed = amiga_floppy_change, + .check_events = amiga_check_events, }; static int __init fd_probe_drives(void) @@ -1736,6 +1736,7 @@ static int __init fd_probe_drives(void) disk->major = FLOPPY_MAJOR; disk->first_minor = drive; disk->fops = &floppy_fops; + disk->events = DISK_EVENT_MEDIA_CHANGE; sprintf(disk->disk_name, "fd%d", drive); disk->private_data = &unit[drive]; set_capacity(disk, 880*2); diff --git a/drivers/block/ataflop.c b/drivers/block/ataflop.c index 4e4cc6c..0fce4c3 100644 --- a/drivers/block/ataflop.c +++ b/drivers/block/ataflop.c @@ -1324,23 +1324,24 @@ static void finish_fdc_done( int dummy ) * due to unrecognised disk changes. */ -static int check_floppy_change(struct gendisk *disk) +static unsigned int floppy_check_events(struct gendisk *disk, + unsigned int clearing) { struct atari_floppy_struct *p = disk->private_data; unsigned int drive = p - unit; if (test_bit (drive, &fake_change)) { /* simulated change (e.g. after formatting) */ - return 1; + return DISK_EVENT_MEDIA_CHANGE; } if (test_bit (drive, &changed_floppies)) { /* surely changed (the WP signal changed at least once) */ - return 1; + return DISK_EVENT_MEDIA_CHANGE; } if (UD.wpstat) { /* WP is on -> could be changed: to be sure, buffers should be * invalidated... */ - return 1; + return DISK_EVENT_MEDIA_CHANGE; } return 0; @@ -1570,7 +1571,7 @@ static int fd_locked_ioctl(struct block_device *bdev, fmode_t mode, * or the next access will revalidate - and clear UDT :-( */ - if (check_floppy_change(disk)) + if (floppy_check_events(disk, 0)) floppy_revalidate(disk); if (UD.flags & FTD_MSG) @@ -1904,7 +1905,7 @@ static const struct block_device_operations floppy_fops = { .open = floppy_unlocked_open, .release = floppy_release, .ioctl = fd_ioctl, - .media_changed = check_floppy_change, + .check_events = floppy_check_events, .revalidate_disk= floppy_revalidate, }; @@ -1963,6 +1964,7 @@ static int __init atari_floppy_init (void) unit[i].disk->first_minor = i; sprintf(unit[i].disk->disk_name, "fd%d", i); unit[i].disk->fops = &floppy_fops; + unit[i].disk->events = DISK_EVENT_MEDIA_CHANGE; unit[i].disk->private_data = &unit[i]; unit[i].disk->queue = blk_init_queue(do_fd_request, &ataflop_lock); diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c index 3951020..317db28 100644 --- a/drivers/block/floppy.c +++ b/drivers/block/floppy.c @@ -3765,13 +3765,14 @@ out2: /* * Check if the disk has been changed or if a change has been faked. */ -static int check_floppy_change(struct gendisk *disk) +static unsigned int floppy_check_events(struct gendisk *disk, + unsigned int clearing) { int drive = (long)disk->private_data; if (test_bit(FD_DISK_CHANGED_BIT, &UDRS->flags) || test_bit(FD_VERIFY_BIT, &UDRS->flags)) - return 1; + return DISK_EVENT_MEDIA_CHANGE; if (time_after(jiffies, UDRS->last_checked + UDP->checkfreq)) { lock_fdc(drive, false); @@ -3783,7 +3784,7 @@ static int check_floppy_change(struct gendisk *disk) test_bit(FD_VERIFY_BIT, &UDRS->flags) || test_bit(drive, &fake_change) || (!ITYPE(UDRS->fd_device) && !current_type[drive])) - return 1; + return DISK_EVENT_MEDIA_CHANGE; return 0; } @@ -3893,7 +3894,7 @@ static const struct block_device_operations floppy_fops = { .release = floppy_release, .ioctl = fd_ioctl, .getgeo = fd_getgeo, - .media_changed = check_floppy_change, + .check_events = floppy_check_events, .revalidate_disk = floppy_revalidate, }; @@ -4200,6 +4201,7 @@ static int __init floppy_init(void) disks[dr]->major = FLOPPY_MAJOR; disks[dr]->first_minor = TOMINOR(dr); disks[dr]->fops = &floppy_fops; + disks[dr]->events = DISK_EVENT_MEDIA_CHANGE; sprintf(disks[dr]->disk_name, "fd%d", dr); init_timer(&motor_off_timer[dr]); -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/