On 05/22/15 23:45, Rafał Miłecki wrote:
Platform NVRAMs often contain values with spaces. Even if right now most firmware-supported entries are simple values, we shouldn't reject these with spaces. It was semi-confirmed by Broadocm in the early patch adding support for platform NVRAMs.
Well, here is my full confirmation ;-) and thanks. Acked-by: Arend van Spriel <[email protected]>
Signed-off-by: Rafał Miłecki<[email protected]> --- V2: Minor change in commit message only. Provide an example of NVRAM entry using space (not just a '#'). It's unprefixed (shouldn't be uploaded to hardware anyway), but proves it's allowed in general. V3: As commented by Arend, accept space only (not a '#'). --- drivers/net/wireless/brcm80211/brcmfmac/firmware.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/brcm80211/brcmfmac/firmware.c b/drivers/net/wireless/brcm80211/brcmfmac/firmware.c index 45d7191..baad939 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/firmware.c +++ b/drivers/net/wireless/brcm80211/brcmfmac/firmware.c @@ -66,6 +66,12 @@ struct nvram_parser { bool multi_dev_v2; }; +/** + * is_nvram_char() - check if char is a valid one for NVRAM entry + * + * It accepts all printable ASCII chars except for '#' which opens a comment. + * Please note that ' ' (space) while accepted is not a valid key name char. + */ static bool is_nvram_char(char c) { /* comment marker excluded */ @@ -73,7 +79,7 @@ static bool is_nvram_char(char c) return false; /* key and value may have any other readable character */ - return (c> 0x20&& c< 0x7f); + return (c>= 0x20&& c< 0x7f); } static bool is_whitespace(char c) @@ -120,7 +126,7 @@ static enum nvram_parser_state brcmf_nvram_handle_key(struct nvram_parser *nvp) nvp->multi_dev_v1 = true; if (strncmp(&nvp->fwnv->data[nvp->entry], "pcie/", 5) == 0) nvp->multi_dev_v2 = true; - } else if (!is_nvram_char(c)) { + } else if (!is_nvram_char(c) || c == ' ') { brcmf_dbg(INFO, "warning: ln=%d:col=%d: '=' expected, skip invalid key entry\n", nvp->line, nvp->column); return COMMENT;
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