summaryrefslogtreecommitdiffstats
path: root/block/sed-opal.c
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2018-04-05 14:27:02 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2018-04-05 14:27:02 -0700
commit3526dd0c7832f1011a0477cc6d903662bae05ea8 (patch)
tree22fbac64eb40a0b29bfa4c029695f39b2f591e62 /block/sed-opal.c
parentdd972f924df6bdbc0ab185a38d5d2361dbc26311 (diff)
parentbc6d65e6dc89c3b7ff78e4ad797117c122ffde8e (diff)
downloadlinux-0-day-3526dd0c7832f1011a0477cc6d903662bae05ea8.tar.gz
Merge tag 'for-4.17/block-20180402' of git://git.kernel.dk/linux-block
Pull block layer updates from Jens Axboe: "It's a pretty quiet round this time, which is nice. This contains: - series from Bart, cleaning up the way we set/test/clear atomic queue flags. - series from Bart, fixing races between gendisk and queue registration and removal. - set of bcache fixes and improvements from various folks, by way of Michael Lyle. - set of lightnvm updates from Matias, most of it being the 1.2 to 2.0 transition. - removal of unused DIO flags from Nikolay. - blk-mq/sbitmap memory ordering fixes from Omar. - divide-by-zero fix for BFQ from Paolo. - minor documentation patches from Randy. - timeout fix from Tejun. - Alpha "can't write a char atomically" fix from Mikulas. - set of NVMe fixes by way of Keith. - bsg and bsg-lib improvements from Christoph. - a few sed-opal fixes from Jonas. - cdrom check-disk-change deadlock fix from Maurizio. - various little fixes, comment fixes, etc from various folks" * tag 'for-4.17/block-20180402' of git://git.kernel.dk/linux-block: (139 commits) blk-mq: Directly schedule q->timeout_work when aborting a request blktrace: fix comment in blktrace_api.h lightnvm: remove function name in strings lightnvm: pblk: remove some unnecessary NULL checks lightnvm: pblk: don't recover unwritten lines lightnvm: pblk: implement 2.0 support lightnvm: pblk: implement get log report chunk lightnvm: pblk: rename ppaf* to addrf* lightnvm: pblk: check for supported version lightnvm: implement get log report chunk helpers lightnvm: make address conversions depend on generic device lightnvm: add support for 2.0 address format lightnvm: normalize geometry nomenclature lightnvm: complete geo structure with maxoc* lightnvm: add shorten OCSSD version in geo lightnvm: add minor version to generic geometry lightnvm: simplify geometry structure lightnvm: pblk: refactor init/exit sequences lightnvm: Avoid validation of default op value lightnvm: centralize permission check for lightnvm ioctl ...
Diffstat (limited to 'block/sed-opal.c')
-rw-r--r--block/sed-opal.c37
1 files changed, 27 insertions, 10 deletions
diff --git a/block/sed-opal.c b/block/sed-opal.c
index e4929ee..945f4b8 100644
--- a/block/sed-opal.c
+++ b/block/sed-opal.c
@@ -554,15 +554,14 @@ static void add_token_u64(int *err, struct opal_dev *cmd, u64 number)
size_t len;
int msb;
- u8 n;
if (!(number & ~TINY_ATOM_DATA_MASK)) {
add_token_u8(err, cmd, number);
return;
}
- msb = fls(number);
- len = DIV_ROUND_UP(msb, 4);
+ msb = fls64(number);
+ len = DIV_ROUND_UP(msb, 8);
if (cmd->pos >= IO_BUFFER_LENGTH - len - 1) {
pr_debug("Error adding u64: end of buffer.\n");
@@ -570,10 +569,8 @@ static void add_token_u64(int *err, struct opal_dev *cmd, u64 number)
return;
}
add_short_atom_header(cmd, false, false, len);
- while (len--) {
- n = number >> (len * 8);
- add_token_u8(err, cmd, n);
- }
+ while (len--)
+ add_token_u8(err, cmd, number >> (len * 8));
}
static void add_token_bytestring(int *err, struct opal_dev *cmd,
@@ -871,6 +868,9 @@ static int response_parse(const u8 *buf, size_t length,
static size_t response_get_string(const struct parsed_resp *resp, int n,
const char **store)
{
+ u8 skip;
+ const struct opal_resp_tok *token;
+
*store = NULL;
if (!resp) {
pr_debug("Response is NULL\n");
@@ -883,13 +883,30 @@ static size_t response_get_string(const struct parsed_resp *resp, int n,
return 0;
}
- if (resp->toks[n].type != OPAL_DTA_TOKENID_BYTESTRING) {
+ token = &resp->toks[n];
+ if (token->type != OPAL_DTA_TOKENID_BYTESTRING) {
pr_debug("Token is not a byte string!\n");
return 0;
}
- *store = resp->toks[n].pos + 1;
- return resp->toks[n].len - 1;
+ switch (token->width) {
+ case OPAL_WIDTH_TINY:
+ case OPAL_WIDTH_SHORT:
+ skip = 1;
+ break;
+ case OPAL_WIDTH_MEDIUM:
+ skip = 2;
+ break;
+ case OPAL_WIDTH_LONG:
+ skip = 4;
+ break;
+ default:
+ pr_debug("Token has invalid width!\n");
+ return 0;
+ }
+
+ *store = token->pos + skip;
+ return token->len - skip;
}
static u64 response_get_u64(const struct parsed_resp *resp, int n)