From: Kalle Valo <kalle.valo@nokia.com>
Date: Fri, 11 Jan 2008 17:28:51 +0000 (+0200)
Subject: omap2_mcspi: fix PIO RX_ONLY transfer
X-Git-Tag: v2.6.24-omap1~63
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2ae71b94269fa117f637ba01f1f26d978ac2f60a;p=pandora-kernel.git

omap2_mcspi: fix PIO RX_ONLY transfer

Before transmission of the last word in PIO RX_ONLY mode rx+tx mode
is enabled:

	/* prevent last RX_ONLY read from triggering
	 * more word i/o: switch to rx+tx
	 */
	if (c == 0 && tx == NULL)
		mcspi_write_cs_reg(spi,
				OMAP2_MCSPI_CHCONF0, l);

But because c is decremented after the test, c will never be zero and
rx+tx will not be enabled. This breaks RX_ONLY mode PIO transfers.

Fix it by decrementing c already in the beginning of the loop.

Signed-off-by: Kalle Valo <kalle.valo@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
---

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