From: Mike Sterling Date: Tue, 6 Sep 2011 23:10:55 +0000 (-0700) Subject: Staging: hv: Add support for >2 TB LUN in storage driver. X-Git-Tag: firefly_0821_release~7541^2~2553 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=70908d994241bb79e4f3c546f6ddd262567610c6;p=firefly-linux-kernel-4.4.55.git Staging: hv: Add support for >2 TB LUN in storage driver. commit cf55f4a8b6243b42fb91c56d1421db0d36d60f96 upstream. If a LUN larger than 2 TB is attached to a Linux VM on Hyper-V, we currently report a maximum size of 2 TB. This patch resolves the issue in hv_storvsc. Thanks to Robert Scheck for reporting the issue. Reported-by: Robert Scheck Signed-off-by: Mike Sterling Signed-off-by: K.Y. Srinivasan Signed-off-by: Haiyang Zhang Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/hv/hyperv_storage.h b/drivers/staging/hv/hyperv_storage.h index a01f9a07c988..5af82f4235bd 100644 --- a/drivers/staging/hv/hyperv_storage.h +++ b/drivers/staging/hv/hyperv_storage.h @@ -218,6 +218,7 @@ struct vstor_packet { #define STORVSC_MAX_LUNS_PER_TARGET 64 #define STORVSC_MAX_TARGETS 1 #define STORVSC_MAX_CHANNELS 1 +#define STORVSC_MAX_CMD_LEN 16 struct hv_storvsc_request; diff --git a/drivers/staging/hv/storvsc_drv.c b/drivers/staging/hv/storvsc_drv.c index cb4a25b08313..734076b41bf4 100644 --- a/drivers/staging/hv/storvsc_drv.c +++ b/drivers/staging/hv/storvsc_drv.c @@ -729,6 +729,8 @@ static int storvsc_probe(struct hv_device *device) host->max_id = STORVSC_MAX_TARGETS; /* max # of channels */ host->max_channel = STORVSC_MAX_CHANNELS - 1; + /* max cmd length */ + host->max_cmd_len = STORVSC_MAX_CMD_LEN; /* Register the HBA and start the scsi bus scan */ ret = scsi_add_host(host, &device->device);