From d9f66c1a46163c7c83411058516a69da547262f8 Mon Sep 17 00:00:00 2001 From: Mike Auty Date: Sat, 28 Aug 2010 20:35:17 -0700 Subject: [PATCH 1/5] Input: wacom - fix mousewheel handling for old wacom tablets This fixes a regression introduced in 3b57ca0f80c5c8994b5b1e3d3f904cfe727951f2. The data[6] byte contains either 1 or -1 depending on the whether the mouse wheel on older wacom tablets is moved down (1) or up (-1). The patch introduced in the above commit changed the cast from (signed char) to (signed). When cast as a signed integer and negated, the value of -1 (stored in the byte as 0xff) became -255 rather than 1. This patch reverts the cast to a (signed char) and also removes an unnecessary (signed) cast, as all the values operated on are bitmasked. Signed-off-by: Mike Auty Reviewed-by: Ping Cheng Cc; stable@kernel.org Signed-off-by: Dmitry Torokhov --- drivers/input/tablet/wacom_wac.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/input/tablet/wacom_wac.c b/drivers/input/tablet/wacom_wac.c index 40d77ba8fdc1..6e29badb969e 100644 --- a/drivers/input/tablet/wacom_wac.c +++ b/drivers/input/tablet/wacom_wac.c @@ -243,10 +243,10 @@ static int wacom_graphire_irq(struct wacom_wac *wacom) if (features->type == WACOM_G4 || features->type == WACOM_MO) { input_report_abs(input, ABS_DISTANCE, data[6] & 0x3f); - rw = (signed)(data[7] & 0x04) - (data[7] & 0x03); + rw = (data[7] & 0x04) - (data[7] & 0x03); } else { input_report_abs(input, ABS_DISTANCE, data[7] & 0x3f); - rw = -(signed)data[6]; + rw = -(signed char)data[6]; } input_report_rel(input, REL_WHEEL, rw); } From 2c4e9671edfef534e9726366707d64e63d44e7e6 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Sat, 28 Aug 2010 20:35:17 -0700 Subject: [PATCH 2/5] Input: use PIT_TICK_RATE in vt beep ioctl The KIOCSOUND and KDMKTONE ioctls are based on the CLOCK_TICK_RATE, which is architecture and sometimes configuration specific. In practice, most user applications assume that it is actually defined as the i8253 PIT base clock of 1193182 Hz, which is true on some architectures but not on others. This patch makes the vt code use the PIT frequency on all architectures, which is much more well-defined. It will change the behavior of user applications sending the beep ioctl on all architectures that define CLOCK_TICK_RATE different from PIT_TICK_RATE. The original breakage was introduced in commit bcc8ca099 "Adapt drivers/char/vt_ioctl.c to non-x86". Hopefully, reverting this change will make the frequency correct in more cases than it will make it incorrect. Signed-off-by: Arnd Bergmann Acked-by: Alan Cox Signed-off-by: Dmitry Torokhov --- drivers/char/vt_ioctl.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/drivers/char/vt_ioctl.c b/drivers/char/vt_ioctl.c index 2bbeaaea46e9..38df8c19e74c 100644 --- a/drivers/char/vt_ioctl.c +++ b/drivers/char/vt_ioctl.c @@ -533,11 +533,14 @@ int vt_ioctl(struct tty_struct *tty, struct file * file, case KIOCSOUND: if (!perm) goto eperm; - /* FIXME: This is an old broken API but we need to keep it - supported and somehow separate the historic advertised - tick rate from any real one */ + /* + * The use of PIT_TICK_RATE is historic, it used to be + * the platform-dependent CLOCK_TICK_RATE between 2.6.12 + * and 2.6.36, which was a minor but unfortunate ABI + * change. + */ if (arg) - arg = CLOCK_TICK_RATE / arg; + arg = PIT_TICK_RATE / arg; kd_mksound(arg, 0); break; @@ -553,11 +556,8 @@ int vt_ioctl(struct tty_struct *tty, struct file * file, */ ticks = HZ * ((arg >> 16) & 0xffff) / 1000; count = ticks ? (arg & 0xffff) : 0; - /* FIXME: This is an old broken API but we need to keep it - supported and somehow separate the historic advertised - tick rate from any real one */ if (count) - count = CLOCK_TICK_RATE / count; + count = PIT_TICK_RATE / count; kd_mksound(count, ticks); break; } From ba4d695a90c9176fca8e45d6c872bbf4e8bed315 Mon Sep 17 00:00:00 2001 From: Henrik Rydberg Date: Sat, 28 Aug 2010 21:33:50 -0700 Subject: [PATCH 3/5] Input: MT - initialize slots to unused For MT slots, the ABS_MT_TRACKING_ID determines whether a slot is in use, but currently leaves initialization up to the drivers. This patch sets the slot state to unused upon creation. Signed-off-by: Henrik Rydberg Signed-off-by: Dmitry Torokhov --- drivers/input/input.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/drivers/input/input.c b/drivers/input/input.c index a9b025f4147a..ab6982056518 100644 --- a/drivers/input/input.c +++ b/drivers/input/input.c @@ -1599,11 +1599,14 @@ EXPORT_SYMBOL(input_free_device); * @dev: input device supporting MT events and finger tracking * @num_slots: number of slots used by the device * - * This function allocates all necessary memory for MT slot handling - * in the input device, and adds ABS_MT_SLOT to the device capabilities. + * This function allocates all necessary memory for MT slot handling in the + * input device, and adds ABS_MT_SLOT to the device capabilities. All slots + * are initially marked as unused iby setting ABS_MT_TRACKING_ID to -1. */ int input_mt_create_slots(struct input_dev *dev, unsigned int num_slots) { + int i; + if (!num_slots) return 0; @@ -1614,6 +1617,10 @@ int input_mt_create_slots(struct input_dev *dev, unsigned int num_slots) dev->mtsize = num_slots; input_set_abs_params(dev, ABS_MT_SLOT, 0, num_slots - 1, 0, 0); + /* Mark slots as 'unused' */ + for (i = 0; i < num_slots; i++) + dev->mt[i].abs[ABS_MT_TRACKING_ID - ABS_MT_FIRST] = -1; + return 0; } EXPORT_SYMBOL(input_mt_create_slots); From 57157becdd1d23e6c2b8661ffe6c78d7d605d121 Mon Sep 17 00:00:00 2001 From: Henrik Rydberg Date: Tue, 31 Aug 2010 17:27:02 -0700 Subject: [PATCH 4/5] Input: bcm5974 - adjust major/minor to scale By visual inspection, the reported touch_major and touch_minor axes are a factor of two too small. Presumably the device actually reports the semi-major and semi-minor axes. Corrected with this patch. Signed-off-by: Henrik Rydberg Signed-off-by: Dmitry Torokhov --- drivers/input/mouse/bcm5974.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/drivers/input/mouse/bcm5974.c b/drivers/input/mouse/bcm5974.c index ea67c49146a3..b95231763911 100644 --- a/drivers/input/mouse/bcm5974.c +++ b/drivers/input/mouse/bcm5974.c @@ -337,10 +337,14 @@ static void report_finger_data(struct input_dev *input, const struct bcm5974_config *cfg, const struct tp_finger *f) { - input_report_abs(input, ABS_MT_TOUCH_MAJOR, raw2int(f->force_major)); - input_report_abs(input, ABS_MT_TOUCH_MINOR, raw2int(f->force_minor)); - input_report_abs(input, ABS_MT_WIDTH_MAJOR, raw2int(f->size_major)); - input_report_abs(input, ABS_MT_WIDTH_MINOR, raw2int(f->size_minor)); + input_report_abs(input, ABS_MT_TOUCH_MAJOR, + raw2int(f->force_major) << 1); + input_report_abs(input, ABS_MT_TOUCH_MINOR, + raw2int(f->force_minor) << 1); + input_report_abs(input, ABS_MT_WIDTH_MAJOR, + raw2int(f->size_major) << 1); + input_report_abs(input, ABS_MT_WIDTH_MINOR, + raw2int(f->size_minor) << 1); input_report_abs(input, ABS_MT_ORIENTATION, MAX_FINGER_ORIENTATION - raw2int(f->orientation)); input_report_abs(input, ABS_MT_POSITION_X, raw2int(f->abs_x)); From af045b86662f17bf130239a65995c61a34f00a6b Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Tue, 31 Aug 2010 17:27:02 -0700 Subject: [PATCH 5/5] Input: i8042 - fix device removal on unload We need to call platform_device_unregister(i8042_platform_device) before calling platform_driver_unregister() because i8042_remove() resets i8042_platform_device to NULL. This leaves the platform device instance behind and prevents driver reload. Fixes https://bugzilla.kernel.org/show_bug.cgi?id=16613 Reported-by: Seryodkin Victor Cc: stable@kernel.org Signed-off-by: Dmitry Torokhov --- drivers/input/serio/i8042.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/input/serio/i8042.c b/drivers/input/serio/i8042.c index 46e4ba0b9246..f58513160480 100644 --- a/drivers/input/serio/i8042.c +++ b/drivers/input/serio/i8042.c @@ -1485,8 +1485,8 @@ static int __init i8042_init(void) static void __exit i8042_exit(void) { - platform_driver_unregister(&i8042_driver); platform_device_unregister(i8042_platform_device); + platform_driver_unregister(&i8042_driver); i8042_platform_exit(); panic_blink = NULL;