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| author | Pavan Savoy <pavan_savoy@ti.com> | 2011-08-10 10:18:35 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-08-22 14:13:34 -0700 |
| commit | d0344ef670d686628f369e649c86f71c90ebe222 (patch) | |
| tree | 20dd638b798f38058bb0db756383e743d5332530 /drivers/misc/ti-st | |
| parent | 2f81a02ce0693863019dc3fcc532533af6dc0dcd (diff) | |
| download | linux-d0344ef670d686628f369e649c86f71c90ebe222.tar.gz linux-d0344ef670d686628f369e649c86f71c90ebe222.tar.bz2 linux-d0344ef670d686628f369e649c86f71c90ebe222.zip | |
drivers:misc: ti-st: wait for completion at fail
When the line discipline install fails for reasons such as missing user-space
UIM or broken communication between UIM and ST driver, then the ST
attempts/retries to request for ldisc installation again.
Signed-off-by: Pavan Savoy <pavan_savoy@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/misc/ti-st')
| -rw-r--r-- | drivers/misc/ti-st/st_kim.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/misc/ti-st/st_kim.c b/drivers/misc/ti-st/st_kim.c index 1748a9351de0..d8ca4068a928 100644 --- a/drivers/misc/ti-st/st_kim.c +++ b/drivers/misc/ti-st/st_kim.c @@ -473,6 +473,12 @@ long st_kim_start(void *kim_data) pr_info("ldisc_install = 0"); sysfs_notify(&kim_gdata->kim_pdev->dev.kobj, NULL, "install"); + /* the following wait is never going to be completed, + * since the ldisc was never installed, hence serving + * as a mdelay of LDISC_TIME msecs */ + err = wait_for_completion_timeout + (&kim_gdata->ldisc_installed, + msecs_to_jiffies(LDISC_TIME)); err = -ETIMEDOUT; continue; } else { @@ -485,6 +491,13 @@ long st_kim_start(void *kim_data) pr_info("ldisc_install = 0"); sysfs_notify(&kim_gdata->kim_pdev->dev.kobj, NULL, "install"); + /* this wait might be completed, though in the + * tty_close() since the ldisc is already + * installed */ + err = wait_for_completion_timeout + (&kim_gdata->ldisc_installed, + msecs_to_jiffies(LDISC_TIME)); + err = -EINVAL; continue; } else { /* on success don't retry */ break; |