diff options
Diffstat (limited to 'drivers/crypto/nx/nx-842-pseries.c')
| -rw-r--r-- | drivers/crypto/nx/nx-842-pseries.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/crypto/nx/nx-842-pseries.c b/drivers/crypto/nx/nx-842-pseries.c index 9b83c9e7fd73..cb481d81df06 100644 --- a/drivers/crypto/nx/nx-842-pseries.c +++ b/drivers/crypto/nx/nx-842-pseries.c @@ -40,6 +40,13 @@ MODULE_DESCRIPTION("842 H/W Compression driver for IBM Power processors"); /* IO buffer must be 128 byte aligned */ #define IO_BUFFER_ALIGN 128 +static struct nx842_constraints nx842_pseries_constraints = { + .alignment = IO_BUFFER_ALIGN, + .multiple = DDE_BUFFER_LAST_MULT, + .minimum = IO_BUFFER_ALIGN, + .maximum = PAGE_SIZE, /* dynamic, max_sync_size */ +}; + struct nx842_header { int blocks_nr; /* number of compressed blocks */ int offset; /* offset of the first block (from beginning of header) */ @@ -842,6 +849,8 @@ static int nx842_OF_upd_maxsyncop(struct nx842_devdata *devdata, goto out; } + nx842_pseries_constraints.maximum = devdata->max_sync_size; + devdata->max_sync_sg = (unsigned int)min(maxsynccop->comp_sg_limit, maxsynccop->decomp_sg_limit); if (devdata->max_sync_sg < 1) { @@ -1115,6 +1124,7 @@ static struct attribute_group nx842_attribute_group = { static struct nx842_driver nx842_pseries_driver = { .owner = THIS_MODULE, + .constraints = &nx842_pseries_constraints, .compress = nx842_pseries_compress, .decompress = nx842_pseries_decompress, }; |