Commit a345c552 authored by Roman Kagan's avatar Roman Kagan Committed by Kevin Wolf
Browse files

qdev-properties: blocksize: use same limits in code and description 



Make it easier (more visible) to maintain the limits on the blocksize
properties in sync with the respective description, by using macros both
in the code and in the description.

Signed-off-by: default avatarRoman Kagan <rvkagan@yandex-team.ru>
Reviewed-by: default avatarEric Blake <eblake@redhat.com>
Message-Id: <20200528225516.1676602-4-rvkagan@yandex-team.ru>
Signed-off-by: default avatarKevin Wolf <kwolf@redhat.com>
parent c56ee92f

hw/core/qdev-properties.c

+15 −6
Original line number Diff line number Diff line
@@ -729,6 +729,13 @@ const PropertyInfo qdev_prop_pci_devfn = { 


/* --- blocksize --- */



/* lower limit is sector size */

#define MIN_BLOCK_SIZE          512

#define MIN_BLOCK_SIZE_STR      stringify(MIN_BLOCK_SIZE)

/* upper limit is the max power of 2 that fits in uint16_t */

#define MAX_BLOCK_SIZE          32768

#define MAX_BLOCK_SIZE_STR      stringify(MAX_BLOCK_SIZE)



static void set_blocksize(Object *obj, Visitor *v, const char *name,

                          void *opaque, Error **errp)

{
@@ -736,8 +743,6 @@ static void set_blocksize(Object *obj, Visitor *v, const char *name, 
    Property *prop = opaque;

    uint16_t value, *ptr = qdev_get_prop_ptr(dev, prop);

    Error *local_err = NULL;

    const int64_t min = 512;

    const int64_t max = 32768;



    if (dev->realized) {

        qdev_prop_set_after_realize(dev, name, errp);
@@ -750,9 +755,12 @@ static void set_blocksize(Object *obj, Visitor *v, const char *name, 
        return;

    }

    /* value of 0 means "unset" */

    if (value && (value < min || value > max)) {

        error_setg(errp, QERR_PROPERTY_VALUE_OUT_OF_RANGE,

                   dev->id ? : "", name, (int64_t)value, min, max);

    if (value && (value < MIN_BLOCK_SIZE || value > MAX_BLOCK_SIZE)) {

        error_setg(errp,

                   "Property %s.%s doesn't take value %" PRIu16

                   " (minimum: " MIN_BLOCK_SIZE_STR

                   ", maximum: " MAX_BLOCK_SIZE_STR ")",

                   dev->id ? : "", name, value);

        return;

    }
@@ -769,7 +777,8 @@ static void set_blocksize(Object *obj, Visitor *v, const char *name, 


const PropertyInfo qdev_prop_blocksize = {

    .name  = "uint16",

    .description = "A power of two between 512 and 32768",

    .description = "A power of two between " MIN_BLOCK_SIZE_STR

                   " and " MAX_BLOCK_SIZE_STR,

    .get   = get_uint16,

    .set   = set_blocksize,

    .set_default_value = set_default_value_uint,