This patch replaces bit shifting on 1 with the BIT(x) macro.
This was done with coccinelle:
@@
constant c;
@@

-1 << c
+BIT(c)

Signed-off-by: Arushi Singhal <arushisinghal19971...@gmail.com>
---
changes in v2
 -remove the unnecessary parenthesis.

 drivers/staging/media/atomisp/pci/atomisp2/atomisp_cmd.c  | 12 ++++++------
 drivers/staging/media/atomisp/pci/atomisp2/atomisp_v4l2.c | 10 +++++-----
 2 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/drivers/staging/media/atomisp/pci/atomisp2/atomisp_cmd.c 
b/drivers/staging/media/atomisp/pci/atomisp2/atomisp_cmd.c
index 94bc7938f533..8edcde282ec9 100644
--- a/drivers/staging/media/atomisp/pci/atomisp2/atomisp_cmd.c
+++ b/drivers/staging/media/atomisp/pci/atomisp2/atomisp_cmd.c
@@ -194,7 +194,7 @@ static int write_target_freq_to_hw(struct atomisp_device 
*isp,
        if (isp_sspm1 & ISP_FREQ_VALID_MASK) {
                dev_dbg(isp->dev, "clearing ISPSSPM1 valid bit.\n");
                intel_mid_msgbus_write32(PUNIT_PORT, ISPSSPM1,
-                                   isp_sspm1 & ~(1 << ISP_FREQ_VALID_OFFSET));
+                                   isp_sspm1 & ~BIT(ISP_FREQ_VALID_OFFSET));
        }
 
        ratio = (2 * isp->hpll_freq + new_freq / 2) / new_freq - 1;
@@ -207,7 +207,7 @@ static int write_target_freq_to_hw(struct atomisp_device 
*isp,
                intel_mid_msgbus_write32(PUNIT_PORT, ISPSSPM1,
                                   isp_sspm1
                                   | ratio << ISP_REQ_FREQ_OFFSET
-                                  | 1 << ISP_FREQ_VALID_OFFSET
+                                  | BIT(ISP_FREQ_VALID_OFFSET)
                                   | guar_ratio << ISP_REQ_GUAR_FREQ_OFFSET);
 
                isp_sspm1 = intel_mid_msgbus_read32(PUNIT_PORT, ISPSSPM1);
@@ -417,10 +417,10 @@ void atomisp_msi_irq_init(struct atomisp_device *isp, 
struct pci_dev *dev)
        u16 msg16;
 
        pci_read_config_dword(dev, PCI_MSI_CAPID, &msg32);
-       msg32 |= 1 << MSI_ENABLE_BIT;
+       msg32 |= BIT(MSI_ENABLE_BIT);
        pci_write_config_dword(dev, PCI_MSI_CAPID, msg32);
 
-       msg32 = (1 << INTR_IER) | (1 << INTR_IIR);
+       msg32 = BIT(INTR_IER) | BIT(INTR_IIR);
        pci_write_config_dword(dev, PCI_INTERRUPT_CTRL, msg32);
 
        pci_read_config_word(dev, PCI_COMMAND, &msg16);
@@ -435,7 +435,7 @@ void atomisp_msi_irq_uninit(struct atomisp_device *isp, 
struct pci_dev *dev)
        u16 msg16;
 
        pci_read_config_dword(dev, PCI_MSI_CAPID, &msg32);
-       msg32 &=  ~(1 << MSI_ENABLE_BIT);
+       msg32 &=  ~BIT(MSI_ENABLE_BIT);
        pci_write_config_dword(dev, PCI_MSI_CAPID, msg32);
 
        msg32 = 0x0;
@@ -536,7 +536,7 @@ static void clear_irq_reg(struct atomisp_device *isp)
 {
        u32 msg_ret;
        pci_read_config_dword(isp->pdev, PCI_INTERRUPT_CTRL, &msg_ret);
-       msg_ret |= 1 << INTR_IIR;
+       msg_ret |= BIT(INTR_IIR);
        pci_write_config_dword(isp->pdev, PCI_INTERRUPT_CTRL, msg_ret);
 }
 
diff --git a/drivers/staging/media/atomisp/pci/atomisp2/atomisp_v4l2.c 
b/drivers/staging/media/atomisp/pci/atomisp2/atomisp_v4l2.c
index 626d2f114d8d..b1f685a841ba 100644
--- a/drivers/staging/media/atomisp/pci/atomisp2/atomisp_v4l2.c
+++ b/drivers/staging/media/atomisp/pci/atomisp2/atomisp_v4l2.c
@@ -330,11 +330,11 @@ static int atomisp_mrfld_pre_power_down(struct 
atomisp_device *isp)
         * IRQ, if so, waiting for it to be served
         */
        pci_read_config_dword(dev, PCI_INTERRUPT_CTRL, &irq);
-       irq = irq & 1 << INTR_IIR;
+       irq = irq & BIT(INTR_IIR);
        pci_write_config_dword(dev, PCI_INTERRUPT_CTRL, irq);
 
        pci_read_config_dword(dev, PCI_INTERRUPT_CTRL, &irq);
-       if (!(irq & (1 << INTR_IIR)))
+       if (!(irq & BIT(INTR_IIR)))
                goto done;
 
        atomisp_store_uint32(MRFLD_INTR_CLEAR_REG, 0xFFFFFFFF);
@@ -347,11 +347,11 @@ static int atomisp_mrfld_pre_power_down(struct 
atomisp_device *isp)
                return -EAGAIN;
        } else {
                pci_read_config_dword(dev, PCI_INTERRUPT_CTRL, &irq);
-               irq = irq & 1 << INTR_IIR;
+               irq = irq & BIT(INTR_IIR);
                pci_write_config_dword(dev, PCI_INTERRUPT_CTRL, irq);
 
                pci_read_config_dword(dev, PCI_INTERRUPT_CTRL, &irq);
-               if (!(irq & (1 << INTR_IIR))) {
+               if (!(irq & BIT(INTR_IIR))) {
                        atomisp_store_uint32(MRFLD_INTR_ENABLE_REG, 0x0);
                        goto done;
                }
@@ -370,7 +370,7 @@ static int atomisp_mrfld_pre_power_down(struct 
atomisp_device *isp)
        * HW sighting:4568410.
        */
        pci_read_config_dword(dev, PCI_INTERRUPT_CTRL, &irq);
-       irq &= ~(1 << INTR_IER);
+       irq &= ~BIT(INTR_IER);
        pci_write_config_dword(dev, PCI_INTERRUPT_CTRL, irq);
 
        atomisp_msi_irq_uninit(isp, dev);
-- 
2.11.0

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