diff mbox series

[net] net: dsa: mt7530: correct ds->num_ports

Message ID 20211016062414.783863-1-dqfext@gmail.com (mailing list archive)
State Accepted
Commit 342afce10d6f61c443c95e244f812d4766f73f53
Delegated to: Netdev Maintainers
Headers show
Series [net] net: dsa: mt7530: correct ds->num_ports | expand

Checks

Context Check Description
netdev/cover_letter success Single patches do not need cover letters
netdev/fixes_present fail Series targets non-next tree, but doesn't contain any Fixes tags
netdev/patch_count success Link
netdev/tree_selection success Clearly marked for net
netdev/subject_prefix success Link
netdev/cc_maintainers success CCed 13 of 13 maintainers
netdev/source_inline success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/module_param success Was 0 now: 0
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/verify_fixes success No Fixes tag
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 26 lines checked
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/header_inline success No static functions without inline keyword in header files

Commit Message

Qingfang Deng Oct. 16, 2021, 6:24 a.m. UTC
Setting ds->num_ports to DSA_MAX_PORTS made DSA core allocate unnecessary
dsa_port's and call mt7530_port_disable for non-existent ports.

Set it to MT7530_NUM_PORTS to fix that, and dsa_is_user_port check in
port_enable/disable is no longer required.

Cc: stable@vger.kernel.org
Signed-off-by: DENG Qingfang <dqfext@gmail.com>
---
 drivers/net/dsa/mt7530.c | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

Comments

Florian Fainelli Oct. 17, 2021, 2:36 a.m. UTC | #1
On 10/15/2021 11:24 PM, DENG Qingfang wrote:
> Setting ds->num_ports to DSA_MAX_PORTS made DSA core allocate unnecessary
> dsa_port's and call mt7530_port_disable for non-existent ports.
> 
> Set it to MT7530_NUM_PORTS to fix that, and dsa_is_user_port check in
> port_enable/disable is no longer required.
> 
> Cc: stable@vger.kernel.org
> Signed-off-by: DENG Qingfang <dqfext@gmail.com>

Do you really want to target the net tree for this change?
Qingfang Deng Oct. 18, 2021, 8:42 a.m. UTC | #2
On Sat, Oct 16, 2021 at 07:36:14PM -0700, Florian Fainelli wrote:
> On 10/15/2021 11:24 PM, DENG Qingfang wrote:
> > Setting ds->num_ports to DSA_MAX_PORTS made DSA core allocate unnecessary
> > dsa_port's and call mt7530_port_disable for non-existent ports.
> > 
> > Set it to MT7530_NUM_PORTS to fix that, and dsa_is_user_port check in
> > port_enable/disable is no longer required.
> > 
> > Cc: stable@vger.kernel.org
> > Signed-off-by: DENG Qingfang <dqfext@gmail.com>
> 
> Do you really want to target the net tree for this change?

Yes because I consider this a bug fix.
patchwork-bot+netdevbpf@kernel.org Oct. 18, 2021, 12:40 p.m. UTC | #3
Hello:

This patch was applied to netdev/net.git (master)
by David S. Miller <davem@davemloft.net>:

On Sat, 16 Oct 2021 14:24:14 +0800 you wrote:
> Setting ds->num_ports to DSA_MAX_PORTS made DSA core allocate unnecessary
> dsa_port's and call mt7530_port_disable for non-existent ports.
> 
> Set it to MT7530_NUM_PORTS to fix that, and dsa_is_user_port check in
> port_enable/disable is no longer required.
> 
> Cc: stable@vger.kernel.org
> Signed-off-by: DENG Qingfang <dqfext@gmail.com>
> 
> [...]

Here is the summary with links:
  - [net] net: dsa: mt7530: correct ds->num_ports
    https://git.kernel.org/netdev/net/c/342afce10d6f

You are awesome, thank you!
--
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html
Florian Fainelli Oct. 18, 2021, 4:22 p.m. UTC | #4
On 10/18/21 1:42 AM, DENG Qingfang wrote:
> On Sat, Oct 16, 2021 at 07:36:14PM -0700, Florian Fainelli wrote:
>> On 10/15/2021 11:24 PM, DENG Qingfang wrote:
>>> Setting ds->num_ports to DSA_MAX_PORTS made DSA core allocate unnecessary
>>> dsa_port's and call mt7530_port_disable for non-existent ports.
>>>
>>> Set it to MT7530_NUM_PORTS to fix that, and dsa_is_user_port check in
>>> port_enable/disable is no longer required.
>>>
>>> Cc: stable@vger.kernel.org
>>> Signed-off-by: DENG Qingfang <dqfext@gmail.com>
>>
>> Do you really want to target the net tree for this change?
> 
> Yes because I consider this a bug fix.


OK, why not provide a Fixes tag to help with targeting the back port
then? This has been applied anyway, so hopefully the auto selection will
do its job and tell you where it stops applying cleanly.
Greg Kroah-Hartman Oct. 19, 2021, 5:59 a.m. UTC | #5
On Mon, Oct 18, 2021 at 09:22:49AM -0700, Florian Fainelli wrote:
> On 10/18/21 1:42 AM, DENG Qingfang wrote:
> > On Sat, Oct 16, 2021 at 07:36:14PM -0700, Florian Fainelli wrote:
> >> On 10/15/2021 11:24 PM, DENG Qingfang wrote:
> >>> Setting ds->num_ports to DSA_MAX_PORTS made DSA core allocate unnecessary
> >>> dsa_port's and call mt7530_port_disable for non-existent ports.
> >>>
> >>> Set it to MT7530_NUM_PORTS to fix that, and dsa_is_user_port check in
> >>> port_enable/disable is no longer required.
> >>>
> >>> Cc: stable@vger.kernel.org
> >>> Signed-off-by: DENG Qingfang <dqfext@gmail.com>
> >>
> >> Do you really want to target the net tree for this change?
> > 
> > Yes because I consider this a bug fix.
> 
> 
> OK, why not provide a Fixes tag to help with targeting the back port
> then? This has been applied anyway, so hopefully the auto selection will
> do its job and tell you where it stops applying cleanly.

Without a "Fixes:" tag, I just backport things as far are they are easy
to go and then stop without an email saying anything fails on older
kernels.

thanks,

greg k-h
diff mbox series

Patch

diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c
index a3b49abd32f1..dbd15da977b5 100644
--- a/drivers/net/dsa/mt7530.c
+++ b/drivers/net/dsa/mt7530.c
@@ -1035,9 +1035,6 @@  mt7530_port_enable(struct dsa_switch *ds, int port,
 {
 	struct mt7530_priv *priv = ds->priv;
 
-	if (!dsa_is_user_port(ds, port))
-		return 0;
-
 	mutex_lock(&priv->reg_mutex);
 
 	/* Allow the user port gets connected to the cpu port and also
@@ -1060,9 +1057,6 @@  mt7530_port_disable(struct dsa_switch *ds, int port)
 {
 	struct mt7530_priv *priv = ds->priv;
 
-	if (!dsa_is_user_port(ds, port))
-		return;
-
 	mutex_lock(&priv->reg_mutex);
 
 	/* Clear up all port matrix which could be restored in the next
@@ -3265,7 +3259,7 @@  mt7530_probe(struct mdio_device *mdiodev)
 		return -ENOMEM;
 
 	priv->ds->dev = &mdiodev->dev;
-	priv->ds->num_ports = DSA_MAX_PORTS;
+	priv->ds->num_ports = MT7530_NUM_PORTS;
 
 	/* Use medatek,mcm property to distinguish hardware type that would
 	 * casues a little bit differences on power-on sequence.