redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

ide/ide-cs: fix order of releasing resources 

ide_detach() called first ide_release() and then release_region(). This
produced the following warnings:

  Trying to free nonexistent resource <000000000000c10e-000000000000c10e>
  Trying to free nonexistent resource <000000000000c100-000000000000c107>

This is true, because the callchain inside ide_release() is:

  ide_release -> pcmcia_disable_device -> pcmcia_release_io

So, the whole io-block is already gone for release_region(). To fix
this, just swap the order of releasing (and remove the now obsolete
shadowing).

bzolnier:
- release resources in ide_release() to fix ordering of events
- remove stale FIXME note while at it

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
hifive-unleashed-5.1
Wolfram Sang 2010-01-15 01:33:08 -08:00 committed by David S. Miller
parent c3be57b6f3
commit d4ae5415c6
1 changed files with 12 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
drivers/ide/ide-cs.c
View File

@ -121,19 +121,11 @@ static int ide_probe(struct pcmcia_device *link)
static void ide_detach(struct pcmcia_device *link)
{
ide_info_t *info = link->priv;
ide_hwif_t *hwif = info->host->ports[0];
unsigned long data_addr, ctl_addr;
dev_dbg(&link->dev, "ide_detach(0x%p)\n", link);
data_addr = hwif->io_ports.data_addr;
ctl_addr = hwif->io_ports.ctl_addr;
ide_release(link);
release_region(ctl_addr, 1);
release_region(data_addr, 8);
kfree(info);
} /* ide_detach */
@ -354,12 +346,19 @@ static void ide_release(struct pcmcia_device *link)
dev_dbg(&link->dev, "ide_release(0x%p)\n", link);
if (info->ndev)
/* FIXME: if this fails we need to queue the cleanup somehow
-- need to investigate the required PCMCIA magic */
ide_host_remove(host);
if (info->ndev) {
ide_hwif_t *hwif = host->ports[0];
unsigned long data_addr, ctl_addr;
info->ndev = 0;
data_addr = hwif->io_ports.data_addr;
ctl_addr = hwif->io_ports.ctl_addr;
ide_host_remove(host);
info->ndev = 0;
release_region(ctl_addr, 1);
release_region(data_addr, 8);
}
pcmcia_disable_device(link);
} /* ide_release */