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Subject[PATCH 02/19] Input: Improve the events-per-packet estimate
Date
Many MT devices send a number of keys along with the mt information.
This patch makes sure that there is room for them in the packet
buffer.

Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
---
drivers/input/input.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/drivers/input/input.c b/drivers/input/input.c
index 6e90705..8ebf116 100644
--- a/drivers/input/input.c
+++ b/drivers/input/input.c
@@ -1777,6 +1777,9 @@ static unsigned int input_estimate_events_per_packet(struct input_dev *dev)
if (test_bit(i, dev->relbit))
events++;

+ /* Make room for KEY and MSC events */
+ events += 7;
+
return events;
}

@@ -1815,6 +1818,7 @@ int input_register_device(struct input_dev *dev)
{
static atomic_t input_no = ATOMIC_INIT(0);
struct input_handler *handler;
+ unsigned int packet_size;
const char *path;
int error;

@@ -1827,9 +1831,9 @@ int input_register_device(struct input_dev *dev)
/* Make sure that bitmasks not mentioned in dev->evbit are clean. */
input_cleanse_bitmasks(dev);

- if (!dev->hint_events_per_packet)
- dev->hint_events_per_packet =
- input_estimate_events_per_packet(dev);
+ packet_size = input_estimate_events_per_packet(dev);
+ if (dev->hint_events_per_packet < packet_size)
+ dev->hint_events_per_packet = packet_size;

/*
* If delay and period are pre-set by the driver, then autorepeating
--
1.7.11.4


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