6.14-stable review patch. If anyone has any objections, please let me know.
------------------
From: Tomasz Pakuła tomasz.pakula.oficjalny@gmail.com
[ Upstream commit 21755162456902998f8d9897086b8c980c540df5 ]
Makes it obvious these magic values ARE in fact derived from min and max values for s16 and u16
Signed-off-by: Tomasz Pakuła tomasz.pakula.oficjalny@gmail.com Reviewed-by: Michał Kopeć michal@nozomi.space Reviewed-by: Paul Dino Jones paul@spacefreak18.xyz Tested-by: Paul Dino Jones paul@spacefreak18.xyz Tested-by: Cristóferson Bueno cbueno81@gmail.com Tested-by: Pablo Cisneros patchkez@protonmail.com Signed-off-by: Jiri Kosina jkosina@suse.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/hid/usbhid/hid-pidff.c | 24 ++++++++++++------------ 1 file changed, 12 insertions(+), 12 deletions(-)
diff --git a/drivers/hid/usbhid/hid-pidff.c b/drivers/hid/usbhid/hid-pidff.c index 8083eb7684e5e..b21e844f5f3a3 100644 --- a/drivers/hid/usbhid/hid-pidff.c +++ b/drivers/hid/usbhid/hid-pidff.c @@ -21,7 +21,7 @@
#define PID_EFFECTS_MAX 64 -#define PID_INFINITE 0xffff +#define PID_INFINITE U16_MAX
/* Linux Force Feedback API uses miliseconds as time unit */ #define FF_TIME_EXPONENT -3 @@ -226,12 +226,12 @@ static int pidff_rescale(int i, int max, struct hid_field *field) }
/* - * Scale a signed value in range -0x8000..0x7fff for the given field + * Scale a signed value in range S16_MIN..S16_MAX for the given field */ static int pidff_rescale_signed(int i, struct hid_field *field) { - if (i > 0) return i * field->logical_maximum / 0x7fff; - if (i < 0) return i * field->logical_minimum / -0x8000; + if (i > 0) return i * field->logical_maximum / S16_MAX; + if (i < 0) return i * field->logical_minimum / S16_MIN; return 0; }
@@ -255,7 +255,7 @@ static u32 pidff_rescale_time(u16 time, struct hid_field *field)
static void pidff_set(struct pidff_usage *usage, u16 value) { - usage->value[0] = pidff_rescale(value, 0xffff, usage->field); + usage->value[0] = pidff_rescale(value, U16_MAX, usage->field); pr_debug("calculated from %d to %d\n", value, usage->value[0]); }
@@ -266,10 +266,10 @@ static void pidff_set_signed(struct pidff_usage *usage, s16 value) else { if (value < 0) usage->value[0] = - pidff_rescale(-value, 0x8000, usage->field); + pidff_rescale(-value, -S16_MIN, usage->field); else usage->value[0] = - pidff_rescale(value, 0x7fff, usage->field); + pidff_rescale(value, S16_MAX, usage->field); } pr_debug("calculated from %d to %d\n", value, usage->value[0]); } @@ -306,11 +306,11 @@ static void pidff_set_envelope_report(struct pidff_device *pidff,
pidff->set_envelope[PID_ATTACK_LEVEL].value[0] = pidff_rescale(envelope->attack_level > - 0x7fff ? 0x7fff : envelope->attack_level, 0x7fff, + S16_MAX ? S16_MAX : envelope->attack_level, S16_MAX, pidff->set_envelope[PID_ATTACK_LEVEL].field); pidff->set_envelope[PID_FADE_LEVEL].value[0] = pidff_rescale(envelope->fade_level > - 0x7fff ? 0x7fff : envelope->fade_level, 0x7fff, + S16_MAX ? S16_MAX : envelope->fade_level, S16_MAX, pidff->set_envelope[PID_FADE_LEVEL].field);
pidff_set_time(&pidff->set_envelope[PID_ATTACK_TIME], @@ -399,7 +399,7 @@ static void pidff_set_effect_report(struct pidff_device *pidff, pidff->effect_direction->value[0] = pidff_rescale( pidff->quirks & HID_PIDFF_QUIRK_FIX_WHEEL_DIRECTION ? PIDFF_FIXED_WHEEL_DIRECTION : effect->direction, - 0xffff, pidff->effect_direction); + U16_MAX, pidff->effect_direction);
/* Omit setting delay field if it's missing */ if (!(pidff->quirks & HID_PIDFF_QUIRK_MISSING_DELAY)) @@ -1366,7 +1366,7 @@ static int pidff_check_autocenter(struct pidff_device *pidff,
if (pidff->block_load[PID_EFFECT_BLOCK_INDEX].value[0] == pidff->block_load[PID_EFFECT_BLOCK_INDEX].field->logical_minimum + 1) { - pidff_autocenter(pidff, 0xffff); + pidff_autocenter(pidff, U16_MAX); set_bit(FF_AUTOCENTER, dev->ffbit); } else { hid_notice(pidff->hid, @@ -1424,7 +1424,7 @@ int hid_pidff_init_with_quirks(struct hid_device *hid, u32 initial_quirks) if (error) goto fail;
- pidff_set_gain_report(pidff, 0xffff); + pidff_set_gain_report(pidff, U16_MAX); error = pidff_check_autocenter(pidff, dev); if (error) goto fail;