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Wed, 01 Jul 2026 17:04:00 -0700 (PDT) From: Rosen Penev To: linux-ide@vger.kernel.org Cc: Damien Le Moal , Niklas Cassel , linux-kernel@vger.kernel.org (open list) Subject: [PATCHv2 7/8] ata: sata_dwc_460ex: fix PHY lifecycle ordering on device removal Date: Wed, 1 Jul 2026 17:03:49 -0700 Message-ID: <20260702000350.68331-8-rosenp@gmail.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260702000350.68331-1-rosenp@gmail.com> References: <20260702000350.68331-1-rosenp@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit sata_dwc_remove() calls phy_exit() while phy_power_off() is still pending in sata_dwc_port_stop(), which runs later during device teardown. This violates the expected PHY sequencing of power_off before exit. Assisted-by: opencode:big-pickle Signed-off-by: Rosen Penev --- drivers/ata/sata_dwc_460ex.c | 32 +++++++++++++++++++------------- 1 file changed, 19 insertions(+), 13 deletions(-) diff --git a/drivers/ata/sata_dwc_460ex.c b/drivers/ata/sata_dwc_460ex.c index f26220cac130..e8e2790be1d6 100644 --- a/drivers/ata/sata_dwc_460ex.c +++ b/drivers/ata/sata_dwc_460ex.c @@ -864,10 +864,14 @@ static int sata_dwc_port_start(struct ata_port *ap) if (err) goto CLEANUP_ALLOC; - err = phy_power_on(hsdev->phy); + err = phy_init(hsdev->phy); if (err) goto CLEANUP_ALLOC; + err = phy_power_on(hsdev->phy); + if (err) + goto CLEANUP_PHY; + for (i = 0; i < SATA_DWC_QCMD_MAX; i++) hsdevp->cmd_issued[i] = SATA_DWC_CMD_ISSUED_NOT; @@ -893,6 +897,8 @@ static int sata_dwc_port_start(struct ata_port *ap) dev_dbg(ap->dev, "%s: done\n", __func__); return 0; +CLEANUP_PHY: + phy_exit(hsdev->phy); CLEANUP_ALLOC: kfree(hsdevp); CLEANUP: @@ -910,6 +916,7 @@ static void sata_dwc_port_stop(struct ata_port *ap) dmaengine_terminate_sync(hsdevp->chan); dma_release_channel(hsdevp->chan); phy_power_off(hsdev->phy); + phy_exit(hsdev->phy); kfree(hsdevp); ap->private_data = NULL; @@ -1176,6 +1183,10 @@ static int sata_dwc_probe(struct platform_device *ofdev) if (irq < 0) return irq; + hsdev->phy = devm_phy_optional_get(dev, "sata-phy"); + if (IS_ERR(hsdev->phy)) + return PTR_ERR(hsdev->phy); + #ifdef CONFIG_SATA_DWC_OLD_DMA if (!device_property_present(dev, "dmas")) { err = sata_dwc_dma_init_old(ofdev, hsdev); @@ -1184,29 +1195,26 @@ static int sata_dwc_probe(struct platform_device *ofdev) } #endif - hsdev->phy = devm_phy_optional_get(dev, "sata-phy"); - if (IS_ERR(hsdev->phy)) - return PTR_ERR(hsdev->phy); - - err = phy_init(hsdev->phy); - if (err) - goto error_out; - /* * Now, register with libATA core, this will also initiate the * device discovery process, invoking our port_start() handler & * error_handler() to execute a dummy Softreset EH session */ err = ata_host_activate(host, irq, sata_dwc_isr, 0, &sata_dwc_sht); - if (err) + if (err) { dev_err(dev, "failed to activate host"); + goto error_out; + } /* Enable SATA Interrupts */ sata_dwc_enable_interrupts(hsdev); return 0; error_out: - phy_exit(hsdev->phy); +#ifdef CONFIG_SATA_DWC_OLD_DMA + if (!device_property_present(dev, "dmas")) + sata_dwc_dma_exit_old(hsdev); +#endif return err; } @@ -1220,8 +1228,6 @@ static void sata_dwc_remove(struct platform_device *ofdev) ata_host_detach(host); - phy_exit(hsdev->phy); - #ifdef CONFIG_SATA_DWC_OLD_DMA /* Free SATA DMA resources */ sata_dwc_dma_exit_old(hsdev); -- 2.55.0