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authorAnatolij Gustschin <agust@denx.de>2013-03-09 06:43:54 -0500
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-03-12 11:53:22 -0400
commit09081e5b47f6842669bb645e015deedf191244f4 (patch)
tree38b5cf907559057cf090bed29c0581211fbdfa15 /drivers/tty/ipwireless
parent34dcfb8479ab3c3669561eb9279284cb0eda2572 (diff)
tty: serial: mpc5xxx: fix PSC clock name bug
mpc512x platform clock code names PSC clocks as "pscX_mclk" but the driver tries to get "pscX_clk" clock and this results in errors like: mpc52xx-psc-uart 80011700.psc: Failed to get PSC clock entry! The problem appears when opening ttyPSC devices other than the system's serial console. Since getting and enabling the PSC clock fails, uart port startup doesn't succeed and tty flag TTY_IO_ERROR remains set causing further errors in tty ioctls, i.e. 'strace stty -F /dev/ttyPSC1' shows: open("/dev/ttyPSC1", O_RDONLY|O_NONBLOCK|O_LARGEFILE) = 3 dup2(3, 0) = 0 close(3) = 0 fcntl64(0, F_GETFL) = 0x10800 (flags O_RDONLY|O_NONBLOCK|O_LARGEFILE) fcntl64(0, F_SETFL, O_RDONLY|O_LARGEFILE) = 0 ioctl(0, TCGETS, 0xbff89038) = -1 EIO (Input/output error) Only request PSC clock names that the platform actually provides. Signed-off-by: Anatolij Gustschin <agust@denx.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/ipwireless')
0 files changed, 0 insertions, 0 deletions