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block: sed-opal: reuse response_get_token to decrease code duplication 

response_get_token had already been in place, its functionality had
been duplicated within response_get_{u64,bytestring} with the same error
handling. Unify the handling by reusing response_get_token within the
other functions.

Co-authored-by: Jonas Rabenstein <jonas.rabenstein@studium.uni-erlangen.de>
Signed-off-by: David Kozub <zub@linux.fjfi.cvut.cz>
Signed-off-by: Jonas Rabenstein <jonas.rabenstein@studium.uni-erlangen.de>
Reviewed-by: Scott Bauer <sbauer@plzdonthack.me>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jon Derrick <jonathan.derrick@intel.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
David Kozub 2019-02-14 01:16:00 +01:00 committed by Jens Axboe
parent 7d9b62ae2a
commit b68f09ecde
1 changed files with 18 additions and 34 deletions
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52
block/sed-opal.c
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@ -883,27 +883,19 @@ static size_t response_get_string(const struct parsed_resp *resp, int n,
const char **store)
{
u8 skip;
const struct opal_resp_tok *token;
const struct opal_resp_tok *tok;
*store = NULL;
if (!resp) {
pr_debug("Response is NULL\n");
tok = response_get_token(resp, n);
if (IS_ERR(tok))
return 0;
}
if (n >= resp->num) {
pr_debug("Response has %d tokens. Can't access %d\n",
resp->num, n);
return 0;
}
token = &resp->toks[n];
if (token->type != OPAL_DTA_TOKENID_BYTESTRING) {
if (tok->type != OPAL_DTA_TOKENID_BYTESTRING) {
pr_debug("Token is not a byte string!\n");
return 0;
}
switch (token->width) {
switch (tok->width) {
case OPAL_WIDTH_TINY:
case OPAL_WIDTH_SHORT:
skip = 1;
@ -919,37 +911,29 @@ static size_t response_get_string(const struct parsed_resp *resp, int n,
return 0;
}
*store = token->pos + skip;
return token->len - skip;
*store = tok->pos + skip;
return tok->len - skip;
}
static u64 response_get_u64(const struct parsed_resp *resp, int n)
{
if (!resp) {
pr_debug("Response is NULL\n");
const struct opal_resp_tok *tok;
tok = response_get_token(resp, n);
if (IS_ERR(tok))
return 0;
if (tok->type != OPAL_DTA_TOKENID_UINT) {
pr_debug("Token is not unsigned int: %d\n", tok->type);
return 0;
}
if (n >= resp->num) {
pr_debug("Response has %d tokens. Can't access %d\n",
resp->num, n);
if (tok->width != OPAL_WIDTH_TINY && tok->width != OPAL_WIDTH_SHORT) {
pr_debug("Atom is not short or tiny: %d\n", tok->width);
return 0;
}
if (resp->toks[n].type != OPAL_DTA_TOKENID_UINT) {
pr_debug("Token is not unsigned it: %d\n",
resp->toks[n].type);
return 0;
}
if (!(resp->toks[n].width == OPAL_WIDTH_TINY ||
resp->toks[n].width == OPAL_WIDTH_SHORT)) {
pr_debug("Atom is not short or tiny: %d\n",
resp->toks[n].width);
return 0;
}
return resp->toks[n].stored.u;
return tok->stored.u;
}
static bool response_token_matches(const struct opal_resp_tok *token, u8 match)