It seems that the register arrary should be indexed by cs, not by wordlen.
-- Brock Zheng <yzh...@techyauld.com> 郑 祎 北京中科腾越科技发展有限公司 北京市海淀区东北旺西路8号中关村软件园21号楼启明星辰大厦二层六区（邮编：100094）
diff --git a/drivers/spi/omap3_spi.c b/drivers/spi/omap3_spi.c index 60e9d6e..2380a0e 100644 --- a/drivers/spi/omap3_spi.c +++ b/drivers/spi/omap3_spi.c @@ -416,7 +416,7 @@ static void _omap3_spi_set_wordlen(struct omap3_spi_priv *priv) unsigned int confr; /* McSPI individual channel configuration */ - confr = readl(&priv->regs->channel[priv->wordlen].chconf); + confr = readl(&priv->regs->channel[priv->cs].chconf); /* wordlength */ confr &= ~OMAP3_MCSPI_CHCONF_WL_MASK;
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