forked from Minki/linux
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: David Kershner <david.kershner@unisys.com> Reviewed-by: Reviewed-by: Tim Sell <timothy.sell@unisys.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -130,11 +130,16 @@ static ssize_t boottotool_show(struct device *dev,
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char *buf)
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{
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struct efi_spar_indication efi_spar_indication;
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int err;
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visorchannel_read(chipset_dev->controlvm_channel,
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offsetof(struct spar_controlvm_channel_protocol,
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efi_spar_ind), &efi_spar_indication,
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sizeof(struct efi_spar_indication));
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err = visorchannel_read(chipset_dev->controlvm_channel,
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offsetof(struct spar_controlvm_channel_protocol,
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efi_spar_ind),
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&efi_spar_indication,
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sizeof(struct efi_spar_indication));
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if (err)
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return err;
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return sprintf(buf, "%u\n", efi_spar_indication.boot_to_tool);
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}
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