Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-12-26 21:02:19 +00:00
Code Issues Packages Projects Releases Wiki Activity

w1: omap-hdq: print dev_err if irq flags are not cleared

Browse Source 
If irq flags are not cleared for certain operations we
print an error message.

Since this should never occur in normal operation, this
patch is an optional safety-net and debugging tool.

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Link: https://lore.kernel.org/r/2de305d3046c7281a7123347899abbaa64c54fb8.1590255176.git.hns@goldelico.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
H. Nikolaus Schaller 2020-05-23 19:32:57 +02:00 committed by Greg Kroah-Hartman
parent 13db4c40fe
commit 0cfcfb314d
1 changed files with 8 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/w1/masters/omap_hdq.c
View File

@ -146,6 +146,10 @@ static int hdq_write_byte(struct hdq_data *hdq_data, u8 val, u8 *status)
goto rtn; goto rtn;
} }
if (hdq_data->hdq_irqstatus)
dev_err(hdq_data->dev, "TX irqstatus not cleared (%02x)\n",
hdq_data->hdq_irqstatus);
*status = 0; *status = 0;
hdq_reg_out(hdq_data, OMAP_HDQ_TX_DATA, val); hdq_reg_out(hdq_data, OMAP_HDQ_TX_DATA, val);
@ -243,6 +247,10 @@ static int omap_hdq_break(struct hdq_data *hdq_data)
goto rtn; goto rtn;
} }
if (hdq_data->hdq_irqstatus)
dev_err(hdq_data->dev, "break irqstatus not cleared (%02x)\n",
hdq_data->hdq_irqstatus);
/* set the INIT and GO bit */ /* set the INIT and GO bit */
hdq_reg_merge(hdq_data, OMAP_HDQ_CTRL_STATUS, hdq_reg_merge(hdq_data, OMAP_HDQ_CTRL_STATUS,
OMAP_HDQ_CTRL_STATUS_INITIALIZATION | OMAP_HDQ_CTRL_STATUS_GO, OMAP_HDQ_CTRL_STATUS_INITIALIZATION | OMAP_HDQ_CTRL_STATUS_GO,