From: Jeffrey Hugo <jeffrey.l.hugo@gmail.com> To: Kalle Valo <kvalo@codeaurora.org> Cc: Simon Horman <simon.horman@netronome.com>, davem@davemloft.net, ath10k@lists.infradead.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org, MSM <linux-arm-msm@vger.kernel.org>, lkml <linux-kernel@vger.kernel.org> Subject: Re: [PATCH] ath10k: Fix qmi init error handling Date: Wed, 13 Nov 2019 08:11:41 -0700 [thread overview] Message-ID: <CAOCk7NpGm7jLH-z9CdJaYAGkg_WuiBxtxgwby+BJef=asFbavw@mail.gmail.com> (raw) In-Reply-To: <87d0dws79m.fsf@kamboji.qca.qualcomm.com> On Tue, Nov 12, 2019 at 9:57 PM Kalle Valo <kvalo@codeaurora.org> wrote: > > Jeffrey Hugo <jeffrey.l.hugo@gmail.com> writes: > > > On Tue, Nov 12, 2019 at 1:42 AM Simon Horman <simon.horman@netronome.com> wrote: > >> > >> On Wed, Nov 06, 2019 at 03:16:50PM -0800, Jeffrey Hugo wrote: > >> > When ath10k_qmi_init() fails, the error handling does not free the irq > >> > resources, which causes an issue if we EPROBE_DEFER as we'll attempt to > >> > (re-)register irqs which are already registered. > >> > > >> > Fixes: ba94c753ccb4 ("ath10k: add QMI message handshake for wcn3990 client") > >> > Signed-off-by: Jeffrey Hugo <jeffrey.l.hugo@gmail.com> > >> > --- > >> > drivers/net/wireless/ath/ath10k/snoc.c | 2 +- > >> > 1 file changed, 1 insertion(+), 1 deletion(-) > >> > > >> > diff --git a/drivers/net/wireless/ath/ath10k/snoc.c b/drivers/net/wireless/ath/ath10k/snoc.c > >> > index fc15a0037f0e..f2a0b7aaad3b 100644 > >> > --- a/drivers/net/wireless/ath/ath10k/snoc.c > >> > +++ b/drivers/net/wireless/ath/ath10k/snoc.c > >> > @@ -1729,7 +1729,7 @@ static int ath10k_snoc_probe(struct platform_device *pdev) > >> > ret = ath10k_qmi_init(ar, msa_size); > >> > if (ret) { > >> > ath10k_warn(ar, "failed to register wlfw qmi client: %d\n", ret); > >> > - goto err_core_destroy; > >> > + goto err_free_irq; > >> > } > >> > >> From a casual examination of the code this seems like a step in the right > >> direction. But does this error path also need to call ath10k_hw_power_off() ? > > > > It probably should. I don't see any fatal errors from the step being > > skipped, although it might silence some regulator warnings about being > > left on. Unlikely to be observed by most folks as I was initing the > > driver pretty early to debug some things. Looks like Kalle already > > picked up this patch though, so I guess your suggestion would need to > > be a follow up. > > Actually it's only in the pending branch, which means that the patch can > be changed or a new version can be submitted: Thats an interesting flow. Ok. > > https://wireless.wiki.kernel.org/en/users/drivers/ath10k/submittingpatches#patch_flow > > The easiest way to check the state of a wireless patch is from > patchwork: > > https://patchwork.kernel.org/patch/11231325/ > > https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches#checking_state_of_patches_from_patchwork > > -- > https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
WARNING: multiple messages have this Message-ID (diff)
From: Jeffrey Hugo <jeffrey.l.hugo@gmail.com> To: Kalle Valo <kvalo@codeaurora.org> Cc: Simon Horman <simon.horman@netronome.com>, linux-wireless@vger.kernel.org, lkml <linux-kernel@vger.kernel.org>, ath10k@lists.infradead.org, netdev@vger.kernel.org, MSM <linux-arm-msm@vger.kernel.org>, davem@davemloft.net Subject: Re: [PATCH] ath10k: Fix qmi init error handling Date: Wed, 13 Nov 2019 08:11:41 -0700 [thread overview] Message-ID: <CAOCk7NpGm7jLH-z9CdJaYAGkg_WuiBxtxgwby+BJef=asFbavw@mail.gmail.com> (raw) In-Reply-To: <87d0dws79m.fsf@kamboji.qca.qualcomm.com> On Tue, Nov 12, 2019 at 9:57 PM Kalle Valo <kvalo@codeaurora.org> wrote: > > Jeffrey Hugo <jeffrey.l.hugo@gmail.com> writes: > > > On Tue, Nov 12, 2019 at 1:42 AM Simon Horman <simon.horman@netronome.com> wrote: > >> > >> On Wed, Nov 06, 2019 at 03:16:50PM -0800, Jeffrey Hugo wrote: > >> > When ath10k_qmi_init() fails, the error handling does not free the irq > >> > resources, which causes an issue if we EPROBE_DEFER as we'll attempt to > >> > (re-)register irqs which are already registered. > >> > > >> > Fixes: ba94c753ccb4 ("ath10k: add QMI message handshake for wcn3990 client") > >> > Signed-off-by: Jeffrey Hugo <jeffrey.l.hugo@gmail.com> > >> > --- > >> > drivers/net/wireless/ath/ath10k/snoc.c | 2 +- > >> > 1 file changed, 1 insertion(+), 1 deletion(-) > >> > > >> > diff --git a/drivers/net/wireless/ath/ath10k/snoc.c b/drivers/net/wireless/ath/ath10k/snoc.c > >> > index fc15a0037f0e..f2a0b7aaad3b 100644 > >> > --- a/drivers/net/wireless/ath/ath10k/snoc.c > >> > +++ b/drivers/net/wireless/ath/ath10k/snoc.c > >> > @@ -1729,7 +1729,7 @@ static int ath10k_snoc_probe(struct platform_device *pdev) > >> > ret = ath10k_qmi_init(ar, msa_size); > >> > if (ret) { > >> > ath10k_warn(ar, "failed to register wlfw qmi client: %d\n", ret); > >> > - goto err_core_destroy; > >> > + goto err_free_irq; > >> > } > >> > >> From a casual examination of the code this seems like a step in the right > >> direction. But does this error path also need to call ath10k_hw_power_off() ? > > > > It probably should. I don't see any fatal errors from the step being > > skipped, although it might silence some regulator warnings about being > > left on. Unlikely to be observed by most folks as I was initing the > > driver pretty early to debug some things. Looks like Kalle already > > picked up this patch though, so I guess your suggestion would need to > > be a follow up. > > Actually it's only in the pending branch, which means that the patch can > be changed or a new version can be submitted: Thats an interesting flow. Ok. > > https://wireless.wiki.kernel.org/en/users/drivers/ath10k/submittingpatches#patch_flow > > The easiest way to check the state of a wireless patch is from > patchwork: > > https://patchwork.kernel.org/patch/11231325/ > > https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches#checking_state_of_patches_from_patchwork > > -- > https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches _______________________________________________ ath10k mailing list ath10k@lists.infradead.org http://lists.infradead.org/mailman/listinfo/ath10k
next prev parent reply other threads:[~2019-11-13 15:11 UTC|newest] Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-11-06 23:16 [PATCH] ath10k: Fix qmi init error handling Jeffrey Hugo 2019-11-06 23:16 ` Jeffrey Hugo 2019-11-12 8:42 ` Simon Horman 2019-11-12 8:42 ` Simon Horman 2019-11-12 15:51 ` Jeffrey Hugo 2019-11-12 15:51 ` Jeffrey Hugo 2019-11-13 4:57 ` Kalle Valo 2019-11-13 4:57 ` Kalle Valo 2019-11-13 15:11 ` Jeffrey Hugo [this message] 2019-11-13 15:11 ` Jeffrey Hugo
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