X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fspi%2Fspi_bitbang.c;h=96cc39ecb6e234f7340fbeb62322ea1831ba9e0d;hb=b2798bf0ec2cb5a17bfc1430c5ba6d971c436a03;hp=81639c6be1c73c052dafaa09ae1a99a80cb55d4f;hpb=0b776eb5426752d4e53354ac89e3710d857e09a7;p=linux-2.6

diff --git a/drivers/spi/spi_bitbang.c b/drivers/spi/spi_bitbang.c
index 81639c6be1..96cc39ecb6 100644
--- a/drivers/spi/spi_bitbang.c
+++ b/drivers/spi/spi_bitbang.c
@@ -184,6 +184,7 @@ int spi_bitbang_setup(struct spi_device *spi)
 	struct spi_bitbang_cs	*cs = spi->controller_state;
 	struct spi_bitbang	*bitbang;
 	int			retval;
+	unsigned long		flags;
 
 	bitbang = spi_master_get_devdata(spi->master);
 
@@ -213,7 +214,7 @@ int spi_bitbang_setup(struct spi_device *spi)
 		return retval;
 
 	dev_dbg(&spi->dev, "%s, mode %d, %u bits/w, %u nsec/bit\n",
-			__FUNCTION__, spi->mode & (SPI_CPOL | SPI_CPHA),
+			__func__, spi->mode & (SPI_CPOL | SPI_CPHA),
 			spi->bits_per_word, 2 * cs->nsecs);
 
 	/* NOTE we _need_ to call chipselect() early, ideally with adapter
@@ -222,12 +223,12 @@ int spi_bitbang_setup(struct spi_device *spi)
 	 */
 
 	/* deselect chip (low or high) */
-	spin_lock(&bitbang->lock);
+	spin_lock_irqsave(&bitbang->lock, flags);
 	if (!bitbang->busy) {
 		bitbang->chipselect(spi, BITBANG_CS_INACTIVE);
 		ndelay(cs->nsecs);
 	}
-	spin_unlock(&bitbang->lock);
+	spin_unlock_irqrestore(&bitbang->lock, flags);
 
 	return 0;
 }
@@ -343,12 +344,14 @@ static void bitbang_work(struct work_struct *work)
 					t->rx_dma = t->tx_dma = 0;
 				status = bitbang->txrx_bufs(spi, t);
 			}
+			if (status > 0)
+				m->actual_length += status;
 			if (status != t->len) {
-				if (status > 0)
-					status = -EMSGSIZE;
+				/* always report some kind of error */
+				if (status >= 0)
+					status = -EREMOTEIO;
 				break;
 			}
-			m->actual_length += status;
 			status = 0;
 
 			/* protocol tweaks before next transfer */