diff mbox series

[net-next,3/7] net: sfp: ignore power level 2 prior to SFF-8472 Rev 10.2

Message ID E1ol97w-00EDSd-CI@rmk-PC.armlinux.org.uk (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series net: sfp: improve high power module implementation | expand

Checks

Context Check Description
netdev/tree_selection success Clearly marked for net-next
netdev/fixes_present success Fixes tag not required for -next series
netdev/subject_prefix success Link
netdev/cover_letter success Series has a cover letter
netdev/patch_count success Link
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/cc_maintainers success CCed 8 of 8 maintainers
netdev/build_clang success Errors and warnings before: 0 this patch: 0
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 9 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Russell King (Oracle) Oct. 19, 2022, 1:28 p.m. UTC
Power level 2 was introduced by SFF-8472 revision 10.2. Ignore
the power declaration bit for modules that are not compliant with
at least this revision.

This should remove any spurious indication of 1.5W modules.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
---
 drivers/net/phy/sfp.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

Comments

Andrew Lunn Oct. 21, 2022, 3:45 p.m. UTC | #1
On Wed, Oct 19, 2022 at 02:28:56PM +0100, Russell King (Oracle) wrote:
> Power level 2 was introduced by SFF-8472 revision 10.2. Ignore
> the power declaration bit for modules that are not compliant with
> at least this revision.
> 
> This should remove any spurious indication of 1.5W modules.
> 
> Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>

Reviewed-by: Andrew Lunn <andrew@lunn.ch>

    Andrew
diff mbox series

Patch

diff --git a/drivers/net/phy/sfp.c b/drivers/net/phy/sfp.c
index f7ad4d5d9041..a7635b02524a 100644
--- a/drivers/net/phy/sfp.c
+++ b/drivers/net/phy/sfp.c
@@ -1761,7 +1761,8 @@  static int sfp_module_parse_power(struct sfp *sfp)
 	u32 power_mW = 1000;
 	bool supports_a2;
 
-	if (sfp->id.ext.options & cpu_to_be16(SFP_OPTIONS_POWER_DECL))
+	if (sfp->id.ext.sff8472_compliance >= SFP_SFF8472_COMPLIANCE_REV10_2 &&
+	    sfp->id.ext.options & cpu_to_be16(SFP_OPTIONS_POWER_DECL))
 		power_mW = 1500;
 	if (sfp->id.ext.options & cpu_to_be16(SFP_OPTIONS_HIGH_POWER_LEVEL))
 		power_mW = 2000;