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path: root/drivers/i2c/busses/i2c-imx.c
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Diffstat (limited to 'drivers/i2c/busses/i2c-imx.c')
-rw-r--r--drivers/i2c/busses/i2c-imx.c26
1 files changed, 14 insertions, 12 deletions
diff --git a/drivers/i2c/busses/i2c-imx.c b/drivers/i2c/busses/i2c-imx.c
index e3654d683e15..75bf820e7ccb 100644
--- a/drivers/i2c/busses/i2c-imx.c
+++ b/drivers/i2c/busses/i2c-imx.c
@@ -226,7 +226,6 @@ static void i2c_imx_stop(struct imx_i2c_struct *i2c_imx)
226 temp = readb(i2c_imx->base + IMX_I2C_I2CR); 226 temp = readb(i2c_imx->base + IMX_I2C_I2CR);
227 temp &= ~(I2CR_MSTA | I2CR_MTX); 227 temp &= ~(I2CR_MSTA | I2CR_MTX);
228 writeb(temp, i2c_imx->base + IMX_I2C_I2CR); 228 writeb(temp, i2c_imx->base + IMX_I2C_I2CR);
229 i2c_imx->stopped = 1;
230 } 229 }
231 if (cpu_is_mx1()) { 230 if (cpu_is_mx1()) {
232 /* 231 /*
@@ -236,8 +235,10 @@ static void i2c_imx_stop(struct imx_i2c_struct *i2c_imx)
236 udelay(i2c_imx->disable_delay); 235 udelay(i2c_imx->disable_delay);
237 } 236 }
238 237
239 if (!i2c_imx->stopped) 238 if (!i2c_imx->stopped) {
240 i2c_imx_bus_busy(i2c_imx, 0); 239 i2c_imx_bus_busy(i2c_imx, 0);
240 i2c_imx->stopped = 1;
241 }
241 242
242 /* Disable I2C controller */ 243 /* Disable I2C controller */
243 writeb(0, i2c_imx->base + IMX_I2C_I2CR); 244 writeb(0, i2c_imx->base + IMX_I2C_I2CR);
@@ -496,22 +497,23 @@ static int __init i2c_imx_probe(struct platform_device *pdev)
496 } 497 }
497 498
498 res_size = resource_size(res); 499 res_size = resource_size(res);
500
501 if (!request_mem_region(res->start, res_size, DRIVER_NAME)) {
502 ret = -EBUSY;
503 goto fail0;
504 }
505
499 base = ioremap(res->start, res_size); 506 base = ioremap(res->start, res_size);
500 if (!base) { 507 if (!base) {
501 dev_err(&pdev->dev, "ioremap failed\n"); 508 dev_err(&pdev->dev, "ioremap failed\n");
502 ret = -EIO; 509 ret = -EIO;
503 goto fail0; 510 goto fail1;
504 } 511 }
505 512
506 i2c_imx = kzalloc(sizeof(struct imx_i2c_struct), GFP_KERNEL); 513 i2c_imx = kzalloc(sizeof(struct imx_i2c_struct), GFP_KERNEL);
507 if (!i2c_imx) { 514 if (!i2c_imx) {
508 dev_err(&pdev->dev, "can't allocate interface\n"); 515 dev_err(&pdev->dev, "can't allocate interface\n");
509 ret = -ENOMEM; 516 ret = -ENOMEM;
510 goto fail1;
511 }
512
513 if (!request_mem_region(res->start, res_size, DRIVER_NAME)) {
514 ret = -EBUSY;
515 goto fail2; 517 goto fail2;
516 } 518 }
517 519
@@ -582,11 +584,11 @@ fail5:
582fail4: 584fail4:
583 clk_put(i2c_imx->clk); 585 clk_put(i2c_imx->clk);
584fail3: 586fail3:
585 release_mem_region(i2c_imx->res->start, resource_size(res));
586fail2:
587 kfree(i2c_imx); 587 kfree(i2c_imx);
588fail1: 588fail2:
589 iounmap(base); 589 iounmap(base);
590fail1:
591 release_mem_region(res->start, resource_size(res));
590fail0: 592fail0:
591 if (pdata && pdata->exit) 593 if (pdata && pdata->exit)
592 pdata->exit(&pdev->dev); 594 pdata->exit(&pdev->dev);
@@ -618,8 +620,8 @@ static int __exit i2c_imx_remove(struct platform_device *pdev)
618 620
619 clk_put(i2c_imx->clk); 621 clk_put(i2c_imx->clk);
620 622
621 release_mem_region(i2c_imx->res->start, resource_size(i2c_imx->res));
622 iounmap(i2c_imx->base); 623 iounmap(i2c_imx->base);
624 release_mem_region(i2c_imx->res->start, resource_size(i2c_imx->res));
623 kfree(i2c_imx); 625 kfree(i2c_imx);
624 return 0; 626 return 0;
625} 627}