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Commit 0b01c6ce authored by David Kershner's avatar David Kershner Committed by Greg Kroah-Hartman
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staging: unisys: visorbus: add error handling to boottotool_show 



Don't just drop the error from visorchannel_read on the floor, report it.

Signed-off-by: default avatarDavid Kershner <david.kershner@unisys.com>
Reviewed-by: default avatarReviewed-by: Tim Sell <timothy.sell@unisys.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 002a5abb

drivers/staging/unisys/visorbus/visorchipset.c

+9 −4
Original line number Diff line number Diff line
@@ -130,11 +130,16 @@ static ssize_t boottotool_show(struct device *dev, 
			       char *buf)

{

	struct efi_spar_indication efi_spar_indication;

	int err;



	visorchannel_read(chipset_dev->controlvm_channel,

	err = visorchannel_read(chipset_dev->controlvm_channel,

				offsetof(struct spar_controlvm_channel_protocol,

				   efi_spar_ind), &efi_spar_indication,

					 efi_spar_ind),

				&efi_spar_indication,

				sizeof(struct efi_spar_indication));



	if (err)

		return err;

	return sprintf(buf, "%u\n", efi_spar_indication.boot_to_tool);

}