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HID: hid-core: optimize in case of hidraw 

When using hidraw, hid buffer can be big and take lot's of
time to process (interrupt) kernel context.
Don't try to parse report if we are only interrested in hidraw.

Also don't prepare data for debug stuff if no debugfs file
are opened.

Signed-off-by: Matthieu CASTET <matthieu.castet@parrot.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Matthieu CASTET 2012-06-28 16:53:11 +02:00 committed by Jiri Kosina
parent 4c7b417ecb
commit b94e3c94aa
2 changed files with 9 additions and 3 deletions
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10
drivers/hid/hid-core.c
View File

@ -1194,8 +1194,10 @@ int hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size,
goto out; goto out;
} }
for (a = 0; a < report->maxfield; a++) if (hid->claimed != HID_CLAIMED_HIDRAW) {
hid_input_field(hid, report->field[a], cdata, interrupt); for (a = 0; a < report->maxfield; a++)
hid_input_field(hid, report->field[a], cdata, interrupt);
}
if (hid->claimed & HID_CLAIMED_INPUT) if (hid->claimed & HID_CLAIMED_INPUT)
hidinput_report_event(hid, report); hidinput_report_event(hid, report);
@ -1243,6 +1245,10 @@ int hid_input_report(struct hid_device *hid, int type, u8 *data, int size, int i
goto unlock; goto unlock;
} }
/* Avoid unnecessary overhead if debugfs is disabled */
if (list_empty(&hid->debug_list))
goto nomem;
buf = kmalloc(sizeof(char) * HID_DEBUG_BUFSIZE, GFP_ATOMIC); buf = kmalloc(sizeof(char) * HID_DEBUG_BUFSIZE, GFP_ATOMIC);
if (!buf) if (!buf)

2
drivers/hid/hid-picolcd.c
View File

@ -1846,7 +1846,7 @@ static void picolcd_debug_out_report(struct picolcd_data *data,
#define BUFF_SZ 256 #define BUFF_SZ 256
/* Avoid unnecessary overhead if debugfs is disabled */ /* Avoid unnecessary overhead if debugfs is disabled */
if (!hdev->debug_events) if (list_empty(&hdev->debug_list))
return; return;
buff = kmalloc(BUFF_SZ, GFP_ATOMIC); buff = kmalloc(BUFF_SZ, GFP_ATOMIC);