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| author | Alexandre Bounine <alexandre.bounine@idt.com> | 2011-04-14 15:22:14 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-04-14 16:06:56 -0700 |
| commit | 59f9996555542f901f2d01ccab5c0612c8c5c480 (patch) | |
| tree | 2262a4e5620454fd97a82a276a417d1eaed11674 /arch/powerpc/sysdev | |
| parent | 13209c2a52afa691ca19e7e6ebd22d4034bdfeed (diff) | |
| download | linux-3.10-59f9996555542f901f2d01ccab5c0612c8c5c480.tar.gz linux-3.10-59f9996555542f901f2d01ccab5c0612c8c5c480.tar.bz2 linux-3.10-59f9996555542f901f2d01ccab5c0612c8c5c480.zip | |
RapidIO/mpc85xx: fix possible mport registration problems
Fix a possible problem with mport registration left non-cleared after
fsl_rio_setup() exits on link error. Abort mport initialization if
registration failed.
This patch is applicable to 2.6.39-rc1 only. The problem does not exist
for earlier versions.
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>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/powerpc/sysdev')
| -rw-r--r-- | arch/powerpc/sysdev/fsl_rio.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/powerpc/sysdev/fsl_rio.c b/arch/powerpc/sysdev/fsl_rio.c index 14232d57369..49798532b47 100644 --- a/arch/powerpc/sysdev/fsl_rio.c +++ b/arch/powerpc/sysdev/fsl_rio.c @@ -1457,7 +1457,6 @@ int fsl_rio_setup(struct platform_device *dev) port->ops = ops; port->priv = priv; port->phys_efptr = 0x100; - rio_register_mport(port); priv->regs_win = ioremap(regs.start, regs.end - regs.start + 1); rio_regs_win = priv->regs_win; @@ -1504,6 +1503,9 @@ int fsl_rio_setup(struct platform_device *dev) dev_info(&dev->dev, "RapidIO Common Transport System size: %d\n", port->sys_size ? 65536 : 256); + if (rio_register_mport(port)) + goto err; + if (port->host_deviceid >= 0) out_be32(priv->regs_win + RIO_GCCSR, RIO_PORT_GEN_HOST | RIO_PORT_GEN_MASTER | RIO_PORT_GEN_DISCOVERED); |