Messages in this thread Patch in this message | | | From | <> | Subject | [PATCH 6/8] drivers:misc: ti-st: wait for completion at fail | Date | Wed, 10 Aug 2011 10:18:35 -0500 |
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From: Pavan Savoy <pavan_savoy@ti.com>
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> --- 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 8061103..ee20fa9 100644 --- a/drivers/misc/ti-st/st_kim.c +++ b/drivers/misc/ti-st/st_kim.c @@ -474,6 +474,12 @@ 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 { @@ -486,6 +492,13 @@ 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; -- 1.7.4.1
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