diff options
| author | Alexandre Bounine <alexandre.bounine@idt.com> | 2011-08-25 15:59:13 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-08-25 16:25:34 -0700 |
| commit | 284fb68d00c56e971ed01e0b4bac5ddd4d1b74ab (patch) | |
| tree | 5cdfea6c179aa0ed315ba171d924b9dc513dd2e3 /drivers/rapidio/rio-scan.c | |
| parent | 439423f6894aa0dec22187526827456f5004baed (diff) | |
| download | linux-284fb68d00c56e971ed01e0b4bac5ddd4d1b74ab.tar.bz2 | |
rapidio: fix use of non-compatible registers
Replace/remove use of RIO v.1.2 registers/bits that are not
forward-compatible with newer versions of RapidIO specification.
RapidIO specification v.1.3 removed Write Port CSR, Doorbell CSR,
Mailbox CSR and Mailbox and Doorbell bits of the PEF CAR.
Use of removed (since RIO v.1.3) register bits affects users of
currently available 1.3 and 2.x compliant devices who may use not so
recent kernel versions.
Removing checks for unsupported bits makes corresponding routines
compatible with all versions of RapidIO specification. Therefore,
backporting makes stable kernel versions compliant with RIO v.1.3 and
later as well.
Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com>
Cc: Kumar Gala <galak@kernel.crashing.org>
Cc: Matt Porter <mporter@kernel.crashing.org>
Cc: Li Yang <leoli@freescale.com>
Cc: Thomas Moll <thomas.moll@sysgo.com>
Cc: Chul Kim <chul.kim@idt.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/rapidio/rio-scan.c')
| -rw-r--r-- | drivers/rapidio/rio-scan.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/rapidio/rio-scan.c b/drivers/rapidio/rio-scan.c index ee893581d4b7..ebe77dd87daf 100644 --- a/drivers/rapidio/rio-scan.c +++ b/drivers/rapidio/rio-scan.c @@ -505,8 +505,7 @@ static struct rio_dev __devinit *rio_setup_device(struct rio_net *net, rdev->dev.dma_mask = &rdev->dma_mask; rdev->dev.coherent_dma_mask = DMA_BIT_MASK(32); - if ((rdev->pef & RIO_PEF_INB_DOORBELL) && - (rdev->dst_ops & RIO_DST_OPS_DOORBELL)) + if (rdev->dst_ops & RIO_DST_OPS_DOORBELL) rio_init_dbell_res(&rdev->riores[RIO_DOORBELL_RESOURCE], 0, 0xffff); |