linux-kernel - [PATCH v4] Fixes: misc: rtsx: init value of aspm

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Fri, 22 Jan 2021 16:19:06 +0800
From:   <ricky_wu@...ltek.com>
To:     <arnd@...db.de>, <gregkh@...uxfoundation.org>,
        <bhelgaas@...gle.com>, <ricky_wu@...ltek.com>,
        <vaibhavgupta40@...il.com>, <linux-kernel@...r.kernel.org>
CC:     <stable@...r.kernel.org>
Subject: [PATCH v4] Fixes: misc: rtsx: init value of aspm_enabled

From: Ricky Wu <ricky_wu@...ltek.com>

make sure ASPM state sync with pcr->aspm_enabled
init value pcr->aspm_enabled

Cc: stable@...r.kernel.org
Signed-off-by: Ricky Wu <ricky_wu@...ltek.com>
---

v2: fixed conditions in v1 if-statement
v3: give description for v1 and v2
v4: move version change below ---
---
 drivers/misc/cardreader/rtsx_pcr.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/misc/cardreader/rtsx_pcr.c b/drivers/misc/cardreader/rtsx_pcr.c
index 2aa6648fa41f..5a491d2cd1ae 100644
--- a/drivers/misc/cardreader/rtsx_pcr.c
+++ b/drivers/misc/cardreader/rtsx_pcr.c
@@ -1512,6 +1512,7 @@ static int rtsx_pci_probe(struct pci_dev *pcidev,
 	struct pcr_handle *handle;
 	u32 base, len;
 	int ret, i, bar = 0;
+	u8 val;
 
 	dev_dbg(&(pcidev->dev),
 		": Realtek PCI-E Card Reader found at %s [%04x:%04x] (rev %x)\n",
@@ -1577,7 +1578,11 @@ static int rtsx_pci_probe(struct pci_dev *pcidev,
 	pcr->host_cmds_addr = pcr->rtsx_resv_buf_addr;
 	pcr->host_sg_tbl_ptr = pcr->rtsx_resv_buf + HOST_CMDS_BUF_LEN;
 	pcr->host_sg_tbl_addr = pcr->rtsx_resv_buf_addr + HOST_CMDS_BUF_LEN;
-
+	rtsx_pci_read_register(pcr, ASPM_FORCE_CTL, &val);
+	if (val & FORCE_ASPM_CTL0 && val & FORCE_ASPM_CTL1)
+		pcr->aspm_enabled = false;
+	else
+		pcr->aspm_enabled = true;
 	pcr->card_inserted = 0;
 	pcr->card_removed = 0;
 	INIT_DELAYED_WORK(&pcr->carddet_work, rtsx_pci_card_detect);
-- 
2.17.1