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Diffstat (limited to 'drivers/spi/spi-atmel.c')
-rw-r--r--drivers/spi/spi-atmel.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/spi/spi-atmel.c b/drivers/spi/spi-atmel.c
index 079e6b1b0cd..92a6f0d9323 100644
--- a/drivers/spi/spi-atmel.c
+++ b/drivers/spi/spi-atmel.c
@@ -224,7 +224,7 @@ struct atmel_spi {
struct platform_device *pdev;
struct spi_transfer *current_transfer;
- unsigned long current_remaining_bytes;
+ int current_remaining_bytes;
int done_status;
struct completion xfer_completion;
@@ -874,8 +874,9 @@ atmel_spi_pump_pio_data(struct atmel_spi *as, struct spi_transfer *xfer)
spi_readl(as, RDR);
}
if (xfer->bits_per_word > 8) {
- as->current_remaining_bytes -= 2;
- if (as->current_remaining_bytes < 0)
+ if (as->current_remaining_bytes > 2)
+ as->current_remaining_bytes -= 2;
+ else
as->current_remaining_bytes = 0;
} else {
as->current_remaining_bytes--;
@@ -1110,6 +1111,8 @@ static int atmel_spi_one_transfer(struct spi_master *master,
atmel_spi_next_xfer_pio(master, xfer);
} else {
as->current_remaining_bytes -= len;
+ if (as->current_remaining_bytes < 0)
+ as->current_remaining_bytes = 0;
}
} else {
atmel_spi_next_xfer_pio(master, xfer);