linux-kernel - [PATCH V3 6/9] i2c: xiic: Remove interrupt enable/disable in Rx path

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

Message-ID: <1674536682-25278-7-git-send-email-manikanta.guntupalli@amd.com>
Date:   Tue, 24 Jan 2023 10:34:39 +0530
From:   Manikanta Guntupalli <manikanta.guntupalli@....com>
To:     <michal.simek@...inx.com>, <michal.simek@....com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-i2c@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:     <git@....com>, <manikanta.guntupalli@....com>,
        <srinivas.goud@....com>, <shubhrajyoti.datta@....com>,
        <manion05gk@...il.com>,
        Raviteja Narayanam <raviteja.narayanam@...inx.com>
Subject: [PATCH V3 6/9] i2c: xiic: Remove interrupt enable/disable in Rx path

From: Raviteja Narayanam <raviteja.narayanam@...inx.com>

'DYNAMIC_MODE_READ_BROKEN_BIT' quirk added in the driver,
effected IP versions no longer enter dynamic mode.
So, remove local_irq_save/local_irq_restore APIs from driver.

Signed-off-by: Raviteja Narayanam <raviteja.narayanam@...inx.com>
Signed-off-by: Manikanta Guntupalli <manikanta.guntupalli@....com>
Acked-by: Michal Simek <michal.simek@....com>
---
 drivers/i2c/busses/i2c-xiic.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/drivers/i2c/busses/i2c-xiic.c b/drivers/i2c/busses/i2c-xiic.c
index 554f83e34a2a..8503b5016aaf 100644
--- a/drivers/i2c/busses/i2c-xiic.c
+++ b/drivers/i2c/busses/i2c-xiic.c
@@ -741,7 +741,6 @@ static void xiic_start_recv(struct xiic_i2c *i2c)
 	u16 rx_watermark;
 	u8 cr = 0, rfd_set = 0;
 	struct i2c_msg *msg = i2c->rx_msg = i2c->tx_msg;
-	unsigned long flags;
 
 	dev_dbg(i2c->adap.dev.parent, "%s entry, ISR: 0x%x, CR: 0x%x\n",
 		__func__, xiic_getreg32(i2c, XIIC_IISR_OFFSET),
@@ -773,8 +772,6 @@ static void xiic_start_recv(struct xiic_i2c *i2c)
 			bytes--;
 		xiic_setreg8(i2c, XIIC_RFD_REG_OFFSET, bytes);
 
-		local_irq_save(flags);
-
 		/* write the address */
 		xiic_setreg16(i2c, XIIC_DTR_REG_OFFSET,
 			      i2c_8bit_addr_from_msg(msg) |
@@ -787,8 +784,6 @@ static void xiic_start_recv(struct xiic_i2c *i2c)
 		xiic_setreg16(i2c, XIIC_DTR_REG_OFFSET, val);
 
 		xiic_irq_clr_en(i2c, XIIC_INTR_BNB_MASK);
-
-		local_irq_restore(flags);
 	} else {
 		/*
 		 * If previous message is Tx, make sure that Tx FIFO is empty
-- 
2.25.1