diff options
Diffstat (limited to 'target/linux/layerscape/patches-5.4/808-i2c-0013-LF-98-i2c-imx-fix-the-judgement-of-slave-mode-in-isr.patch')
| -rw-r--r-- | target/linux/layerscape/patches-5.4/808-i2c-0013-LF-98-i2c-imx-fix-the-judgement-of-slave-mode-in-isr.patch | 46 |
1 files changed, 0 insertions, 46 deletions
diff --git a/target/linux/layerscape/patches-5.4/808-i2c-0013-LF-98-i2c-imx-fix-the-judgement-of-slave-mode-in-isr.patch b/target/linux/layerscape/patches-5.4/808-i2c-0013-LF-98-i2c-imx-fix-the-judgement-of-slave-mode-in-isr.patch deleted file mode 100644 index cd404efcc0..0000000000 --- a/target/linux/layerscape/patches-5.4/808-i2c-0013-LF-98-i2c-imx-fix-the-judgement-of-slave-mode-in-isr.patch +++ /dev/null @@ -1,46 +0,0 @@ -From 85048a8a0df324df94f9585c1e01d0a4419de4dc Mon Sep 17 00:00:00 2001 -From: Clark Wang <xiaoning.wang@nxp.com> -Date: Wed, 27 Nov 2019 14:23:55 +0800 -Subject: [PATCH] LF-98 i2c: imx: fix the judgement of slave mode in isr - -The I2CR[MSTA] will be modified by software or hardware even in master -mode. The judgment of slave mode by reading CR register is unreliable. -Change to use i2c_imx->slave registered status to judge i2c mode. - -Acked-by: Fugang Duan <fugang.duan@nxp.com> -Signed-off-by: Clark Wang <xiaoning.wang@nxp.com> ---- - drivers/i2c/busses/i2c-imx.c | 13 +++++-------- - 1 file changed, 5 insertions(+), 8 deletions(-) - ---- a/drivers/i2c/busses/i2c-imx.c -+++ b/drivers/i2c/busses/i2c-imx.c -@@ -1482,23 +1482,20 @@ static const struct i2c_algorithm i2c_im - static irqreturn_t i2c_imx_isr(int irq, void *dev_id) - { - struct imx_i2c_struct *i2c_imx = dev_id; -- unsigned int status, ctl; -- irqreturn_t irq_status = IRQ_NONE; -+ unsigned int status; - - status = imx_i2c_read_reg(i2c_imx, IMX_I2C_I2SR); -- ctl = imx_i2c_read_reg(i2c_imx, IMX_I2C_I2CR); - - if (status & I2SR_IIF) { - i2c_imx_clr_if_bit(status, i2c_imx); -- if (ctl & I2CR_MSTA) -- irq_status = i2c_imx_master_isr(i2c_imx); - #if IS_ENABLED(CONFIG_I2C_SLAVE) -- else -- irq_status = i2c_imx_slave_isr(i2c_imx); -+ if (i2c_imx->slave) -+ return i2c_imx_slave_isr(i2c_imx); - #endif -+ return i2c_imx_master_isr(i2c_imx); - } - -- return irq_status; -+ return IRQ_NONE; - } - - static int i2c_imx_probe(struct platform_device *pdev) |