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Diffstat (limited to 'drivers/hid/hid-core.c')
-rw-r--r--drivers/hid/hid-core.c64
1 files changed, 37 insertions, 27 deletions
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 396f8c7e0076..1fd5e331fa8d 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -14,6 +14,8 @@
* any later version.
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/init.h>
@@ -672,7 +674,8 @@ int hid_parse_report(struct hid_device *device, __u8 *start,
if (dispatch_type[item.type](parser, &item)) {
dbg_hid("item %u %u %u %u parsing failed\n",
- item.format, (unsigned)item.size, (unsigned)item.type, (unsigned)item.tag);
+ item.format, (unsigned)item.size,
+ (unsigned)item.type, (unsigned)item.tag);
goto err;
}
@@ -737,13 +740,14 @@ static u32 s32ton(__s32 value, unsigned n)
* Search linux-kernel and linux-usb-devel archives for "hid-core extract".
*/
-static __inline__ __u32 extract(__u8 *report, unsigned offset, unsigned n)
+static __inline__ __u32 extract(const struct hid_device *hid, __u8 *report,
+ unsigned offset, unsigned n)
{
u64 x;
if (n > 32)
- printk(KERN_WARNING "HID: extract() called with n (%d) > 32! (%s)\n",
- n, current->comm);
+ hid_warn(hid, "extract() called with n (%d) > 32! (%s)\n",
+ n, current->comm);
report += offset >> 3; /* adjust byte index */
offset &= 7; /* now only need bit offset into one byte */
@@ -760,18 +764,19 @@ static __inline__ __u32 extract(__u8 *report, unsigned offset, unsigned n)
* endianness of register values by considering a register
* a "cached" copy of the little endiad bit stream.
*/
-static __inline__ void implement(__u8 *report, unsigned offset, unsigned n, __u32 value)
+static __inline__ void implement(const struct hid_device *hid, __u8 *report,
+ unsigned offset, unsigned n, __u32 value)
{
u64 x;
u64 m = (1ULL << n) - 1;
if (n > 32)
- printk(KERN_WARNING "HID: implement() called with n (%d) > 32! (%s)\n",
- n, current->comm);
+ hid_warn(hid, "%s() called with n (%d) > 32! (%s)\n",
+ __func__, n, current->comm);
if (value > m)
- printk(KERN_WARNING "HID: implement() called with too large value %d! (%s)\n",
- value, current->comm);
+ hid_warn(hid, "%s() called with too large value %d! (%s)\n",
+ __func__, value, current->comm);
WARN_ON(value > m);
value &= m;
@@ -892,13 +897,16 @@ static void hid_input_field(struct hid_device *hid, struct hid_field *field,
for (n = 0; n < count; n++) {
- value[n] = min < 0 ? snto32(extract(data, offset + n * size, size), size) :
- extract(data, offset + n * size, size);
+ value[n] = min < 0 ?
+ snto32(extract(hid, data, offset + n * size, size),
+ size) :
+ extract(hid, data, offset + n * size, size);
- if (!(field->flags & HID_MAIN_ITEM_VARIABLE) /* Ignore report if ErrorRollOver */
- && value[n] >= min && value[n] <= max
- && field->usage[value[n] - min].hid == HID_UP_KEYBOARD + 1)
- goto exit;
+ /* Ignore report if ErrorRollOver */
+ if (!(field->flags & HID_MAIN_ITEM_VARIABLE) &&
+ value[n] >= min && value[n] <= max &&
+ field->usage[value[n] - min].hid == HID_UP_KEYBOARD + 1)
+ goto exit;
}
for (n = 0; n < count; n++) {
@@ -928,7 +936,8 @@ exit:
* Output the field into the report.
*/
-static void hid_output_field(struct hid_field *field, __u8 *data)
+static void hid_output_field(const struct hid_device *hid,
+ struct hid_field *field, __u8 *data)
{
unsigned count = field->report_count;
unsigned offset = field->report_offset;
@@ -937,9 +946,11 @@ static void hid_output_field(struct hid_field *field, __u8 *data)
for (n = 0; n < count; n++) {
if (field->logical_minimum < 0) /* signed values */
- implement(data, offset + n * size, size, s32ton(field->value[n], size));
+ implement(hid, data, offset + n * size, size,
+ s32ton(field->value[n], size));
else /* unsigned values */
- implement(data, offset + n * size, size, field->value[n]);
+ implement(hid, data, offset + n * size, size,
+ field->value[n]);
}
}
@@ -956,7 +967,7 @@ void hid_output_report(struct hid_report *report, __u8 *data)
memset(data, 0, ((report->size - 1) >> 3) + 1);
for (n = 0; n < report->maxfield; n++)
- hid_output_field(report->field[n], data);
+ hid_output_field(report->device, report->field[n], data);
}
EXPORT_SYMBOL_GPL(hid_output_report);
@@ -1169,8 +1180,7 @@ int hid_connect(struct hid_device *hdev, unsigned int connect_mask)
hdev->claimed |= HID_CLAIMED_HIDRAW;
if (!hdev->claimed) {
- dev_err(&hdev->dev, "claimed by neither input, hiddev nor "
- "hidraw\n");
+ hid_err(hdev, "claimed by neither input, hiddev nor hidraw\n");
return -ENODEV;
}
@@ -1210,9 +1220,9 @@ int hid_connect(struct hid_device *hdev, unsigned int connect_mask)
bus = "<UNKNOWN>";
}
- dev_info(&hdev->dev, "%s: %s HID v%x.%02x %s [%s] on %s\n",
- buf, bus, hdev->version >> 8, hdev->version & 0xff,
- type, hdev->name, hdev->phys);
+ hid_info(hdev, "%s: %s HID v%x.%02x %s [%s] on %s\n",
+ buf, bus, hdev->version >> 8, hdev->version & 0xff,
+ type, hdev->name, hdev->phys);
return 0;
}
@@ -1956,12 +1966,12 @@ static int __init hid_init(void)
int ret;
if (hid_debug)
- printk(KERN_WARNING "HID: hid_debug is now used solely for parser and driver debugging.\n"
- "HID: debugfs is now used for inspecting the device (report descriptor, reports)\n");
+ pr_warn("hid_debug is now used solely for parser and driver debugging.\n"
+ "debugfs is now used for inspecting the device (report descriptor, reports)\n");
ret = bus_register(&hid_bus_type);
if (ret) {
- printk(KERN_ERR "HID: can't register hid bus\n");
+ pr_err("can't register hid bus\n");
goto err;
}