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HID: pidff: Clamp effect playback LOOP_COUNT value

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Ensures the loop count will never exceed the logical_maximum.

Fixes implementation errors happening when applications use the max
value of int32/DWORD as the effect iterations. This could be observed
when running software both native and in wine.

Signed-off-by: Tomasz Pakuła <tomasz.pakula.oficjalny@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
This commit is contained in:
Tomasz Pakuła 2025-02-25 23:30:01 +01:00 committed by Jiri Kosina
parent bbeface105
commit 0c6673e3d1
1 changed files with 2 additions and 1 deletions
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3
drivers/hid/usbhid/hid-pidff.c
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@ -690,7 +690,8 @@ static void pidff_playback_pid(struct pidff_device *pidff, int pid_id, int n)
} else {
pidff->effect_operation_status->value[0] =
pidff->operation_id[PID_EFFECT_START];
pidff->effect_operation[PID_LOOP_COUNT].value[0] = n;
pidff->effect_operation[PID_LOOP_COUNT].value[0] =
pidff_clamp(n, pidff->effect_operation[PID_LOOP_COUNT].field);
}
hid_hw_request(pidff->hid, pidff->reports[PID_EFFECT_OPERATION],