Input: aiptek - kill aiptek_convert_from_2s_complement() (37767b66) · Commits · 戴 / test

drivers/input/tablet/aiptek.c

+2 −22

Original line number	Diff line number	Diff line
		@@ -376,26 +376,6 @@ static const char map_val_to_str(const struct aiptek_map map, int val)
		return "unknown";
		}

		/***********************************************************************
		* Relative reports deliver values in 2's complement format to
		* deal with negative offsets.
		*/
		static int aiptek_convert_from_2s_complement(unsigned char c)
		{
		int ret;
		unsigned char b = c;
		int negate = 0;

		if ((b & 0x80) != 0) {
		b = ~b;
		b--;
		negate = 1;
		}
		ret = b;
		ret = (negate == 1) ? -ret : ret;
		return ret;
		}

		/***********************************************************************
		* aiptek_irq can receive one of six potential reports.
		* The documentation for each is in the body of the function.
		@@ -473,8 +453,8 @@ static void aiptek_irq(struct urb *urb)
		aiptek->diagnostic =
		AIPTEK_DIAGNOSTIC_SENDING_RELATIVE_IN_ABSOLUTE;
		} else {
		x = aiptek_convert_from_2s_complement(data[2]);
		y = aiptek_convert_from_2s_complement(data[3]);
		x = (signed char) data[2];
		y = (signed char) data[3];

		/* jitterable keeps track of whether any button has been pressed.
		* We're also using it to remap the physical mouse button mask