Commit de3bd7e6 authored Feb 14, 2012 by Danny Kukawka Committed by Grant Likely Mar 09, 2012

spi-topcliff-pch: fix -Wuninitialized warning



Fix for:
drivers/spi/spi-topcliff-pch.c: In function ‘pch_spi_handler_sub’:
drivers/spi/spi-topcliff-pch.c:325:17: warning: ‘bpw_len’ may be
  used uninitialized in this function [-Wuninitialized]
drivers/spi/spi-topcliff-pch.c:325:42: warning: ‘rx_index’ may be
  used uninitialized in this function [-Wuninitialized]
drivers/spi/spi-topcliff-pch.c:325:42: warning: ‘tx_index’ may be
  used uninitialized in this function [-Wuninitialized]

Move usage of tx_index, rx_index and bpw_len into the same
block as where they are set to prevent uninitialized usage.

v2: instead of init variables with 0 move the whole block

Signed-off-by: Danny Kukawka <danny.kukawka@bisect.de>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

parent 690fb11b

drivers/spi/spi-topcliff-pch.c

+17 −16

Original line number	Diff line number	Diff line
		@@ -318,13 +318,12 @@ static void pch_spi_handler_sub(struct pch_spi_data *data, u32 reg_spsr_val,
		data->tx_index = tx_index;
		data->rx_index = rx_index;

		}

		/* if transfer complete interrupt */
		if (reg_spsr_val & SPSR_FI_BIT) {
		if ((tx_index == bpw_len) && (rx_index == tx_index)) {
		/* disable interrupts */
		pch_spi_setclr_reg(data->master, PCH_SPCR, 0, PCH_ALL);
		pch_spi_setclr_reg(data->master, PCH_SPCR, 0,
		PCH_ALL);

		/* transfer is completed;
		inform pch_spi_process_messages */
		@@ -333,7 +332,9 @@ static void pch_spi_handler_sub(struct pch_spi_data *data, u32 reg_spsr_val,
		wake_up(&data->wait);
		} else {
		dev_err(&data->master->dev,
		"%s : Transfer is not completed", __func__);
		"%s : Transfer is not completed",
		__func__);
		}
		}
		}
		}