From: Greg KH <[email protected]> 3.5-stable review patch. If anyone has any objections, please let me know.
------------------ From: Johannes Berg <[email protected]> commit 4fc79db178f0a0ede479b4713e00df2d106028b3 upstream. If the device is not started, we can't read its SRAM and attempting to do so will cause issues. Protect the debugfs read. Signed-off-by: Johannes Berg <[email protected]> Signed-off-by: John W. Linville <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- drivers/net/wireless/iwlwifi/iwl-debugfs.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/net/wireless/iwlwifi/iwl-debugfs.c +++ b/drivers/net/wireless/iwlwifi/iwl-debugfs.c @@ -128,6 +128,9 @@ static ssize_t iwl_dbgfs_sram_read(struc const struct fw_img *img; size_t bufsz; + if (!iwl_is_ready_rf(priv)) + return -EAGAIN; + /* default is to dump the entire data segment */ if (!priv->dbgfs_sram_offset && !priv->dbgfs_sram_len) { priv->dbgfs_sram_offset = 0x800000; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
