diff options
| author | Max Filippov <jcmvbkbc@gmail.com> | 2009-03-25 15:45:01 +0300 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2009-04-23 00:54:26 +0400 |
| commit | 5e3af1d2d3e6c0011b4c22514d39c73dcbc6674f (patch) | |
| tree | e8b7e4d3ae5d70ab6ca7410566ae6e746a982527 /drivers/net/wireless/p54/p54spi.c | |
| parent | f74d0f5cacb7023422098dd5c98e3ce06787ba56 (diff) | |
| download | linux-5e3af1d2d3e6c0011b4c22514d39c73dcbc6674f.tar.xz | |
p54spi: fix p54spi_upload_firmware
Instead of firmware itself p54_upload_firmware was sending to the device
content of struct firmware and the following random garbage.
Notice '&' before priv->firmware->data at p54spi_spi_write.
But simple removing of '&' sign triggered BUG_ON at dma_cache_maint.
Thus kmemdup - kfree workaround.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Christian Lamparter <chunkeey@web.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/p54/p54spi.c')
| -rw-r--r-- | drivers/net/wireless/p54/p54spi.c | 34 |
1 files changed, 19 insertions, 15 deletions
diff --git a/drivers/net/wireless/p54/p54spi.c b/drivers/net/wireless/p54/p54spi.c index 55402729d21b..bed894ae04b5 100644 --- a/drivers/net/wireless/p54/p54spi.c +++ b/drivers/net/wireless/p54/p54spi.c @@ -228,8 +228,15 @@ static int p54spi_request_eeprom(struct ieee80211_hw *dev) static int p54spi_upload_firmware(struct ieee80211_hw *dev) { struct p54s_priv *priv = dev->priv; - unsigned long fw_len, fw_addr; - long _fw_len; + unsigned long fw_len, _fw_len; + unsigned int offset = 0; + int err = 0; + u8 *fw; + + fw_len = priv->firmware->size; + fw = kmemdup(priv->firmware->data, fw_len, GFP_KERNEL); + if (!fw) + return -ENOMEM; /* stop the device */ p54spi_write16(priv, SPI_ADRS_DEV_CTRL_STAT, cpu_to_le16( @@ -244,9 +251,6 @@ static int p54spi_upload_firmware(struct ieee80211_hw *dev) msleep(TARGET_BOOT_SLEEP); - fw_addr = ISL38XX_DEV_FIRMWARE_ADDR; - fw_len = priv->firmware->size; - while (fw_len > 0) { _fw_len = min_t(long, fw_len, SPI_MAX_PACKET_SIZE); @@ -257,23 +261,20 @@ static int p54spi_upload_firmware(struct ieee80211_hw *dev) cpu_to_le32(HOST_ALLOWED)) == 0) { dev_err(&priv->spi->dev, "fw_upload not allowed " "to DMA write."); - return -EAGAIN; + err = -EAGAIN; + goto out; } p54spi_write16(priv, SPI_ADRS_DMA_WRITE_LEN, cpu_to_le16(_fw_len)); - p54spi_write32(priv, SPI_ADRS_DMA_WRITE_BASE, - cpu_to_le32(fw_addr)); + p54spi_write32(priv, SPI_ADRS_DMA_WRITE_BASE, cpu_to_le32( + ISL38XX_DEV_FIRMWARE_ADDR + offset)); p54spi_spi_write(priv, SPI_ADRS_DMA_DATA, - &priv->firmware->data, _fw_len); + (fw + offset), _fw_len); fw_len -= _fw_len; - fw_addr += _fw_len; - - /* FIXME: I think this doesn't work if firmware is large, - * this loop goes to second round. fw->data is not - * increased at all! */ + offset += _fw_len; } BUG_ON(fw_len != 0); @@ -292,7 +293,10 @@ static int p54spi_upload_firmware(struct ieee80211_hw *dev) p54spi_write16(priv, SPI_ADRS_DEV_CTRL_STAT, cpu_to_le16( SPI_CTRL_STAT_HOST_OVERRIDE | SPI_CTRL_STAT_RAM_BOOT)); msleep(TARGET_BOOT_SLEEP); - return 0; + +out: + kfree(fw); + return err; } static void p54spi_power_off(struct p54s_priv *priv) |