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author | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2020-05-19 23:01:26 +0200 |
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committer | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2020-05-19 23:37:01 +0200 |
commit | 2ae782ca839e0ee07de37122ddea362adff2e975 (patch) | |
tree | df6b1a190760f51465122ca4c13492d5ac5984c6 /drivers/misc/vmw_vmci/vmci_handle_array.c | |
parent | 0a8ab17689e628c84a666195bfc6ab85d11cf057 (diff) | |
parent | 0661b3d6cfd774e28a2e2ba90a3d87479e5c399b (diff) |
Merge tag 'v4.9.220' into 4.9-2.3.x-imx
This is the 4.9.220 stable release
Conflicts:
arch/arm/Kconfig.debug
arch/arm/boot/dts/imx7s.dtsi
arch/arm/mach-imx/common.h
arch/arm/mach-imx/cpuidle-imx6q.c
arch/arm/mach-imx/cpuidle-imx6sx.c
arch/arm/mach-imx/suspend-imx6.S
block/blk-core.c
drivers/crypto/caam/caamalg.c
drivers/crypto/mxs-dcp.c
drivers/dma/imx-sdma.c
drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
drivers/input/keyboard/imx_keypad.c
drivers/input/keyboard/snvs_pwrkey.c
drivers/mmc/host/sdhci.c
drivers/net/can/flexcan.c
drivers/net/ethernet/freescale/fec_main.c
drivers/net/phy/phy_device.c
drivers/net/wireless/ath/ath10k/pci.c
drivers/tty/serial/imx.c
drivers/usb/dwc3/gadget.c
drivers/usb/host/xhci.c
include/linux/blkdev.h
include/linux/cpu.h
include/linux/platform_data/dma-imx-sdma.h
kernel/cpu.c
net/wireless/util.c
sound/soc/fsl/Kconfig
sound/soc/fsl/fsl_esai.c
sound/soc/fsl/fsl_sai.c
sound/soc/fsl/imx-sgtl5000.c
Diffstat (limited to 'drivers/misc/vmw_vmci/vmci_handle_array.c')
-rw-r--r-- | drivers/misc/vmw_vmci/vmci_handle_array.c | 38 |
1 files changed, 25 insertions, 13 deletions
diff --git a/drivers/misc/vmw_vmci/vmci_handle_array.c b/drivers/misc/vmw_vmci/vmci_handle_array.c index 344973a0fb0a..917e18a8af95 100644 --- a/drivers/misc/vmw_vmci/vmci_handle_array.c +++ b/drivers/misc/vmw_vmci/vmci_handle_array.c @@ -16,24 +16,29 @@ #include <linux/slab.h> #include "vmci_handle_array.h" -static size_t handle_arr_calc_size(size_t capacity) +static size_t handle_arr_calc_size(u32 capacity) { - return sizeof(struct vmci_handle_arr) + + return VMCI_HANDLE_ARRAY_HEADER_SIZE + capacity * sizeof(struct vmci_handle); } -struct vmci_handle_arr *vmci_handle_arr_create(size_t capacity) +struct vmci_handle_arr *vmci_handle_arr_create(u32 capacity, u32 max_capacity) { struct vmci_handle_arr *array; + if (max_capacity == 0 || capacity > max_capacity) + return NULL; + if (capacity == 0) - capacity = VMCI_HANDLE_ARRAY_DEFAULT_SIZE; + capacity = min((u32)VMCI_HANDLE_ARRAY_DEFAULT_CAPACITY, + max_capacity); array = kmalloc(handle_arr_calc_size(capacity), GFP_ATOMIC); if (!array) return NULL; array->capacity = capacity; + array->max_capacity = max_capacity; array->size = 0; return array; @@ -44,27 +49,34 @@ void vmci_handle_arr_destroy(struct vmci_handle_arr *array) kfree(array); } -void vmci_handle_arr_append_entry(struct vmci_handle_arr **array_ptr, - struct vmci_handle handle) +int vmci_handle_arr_append_entry(struct vmci_handle_arr **array_ptr, + struct vmci_handle handle) { struct vmci_handle_arr *array = *array_ptr; if (unlikely(array->size >= array->capacity)) { /* reallocate. */ struct vmci_handle_arr *new_array; - size_t new_capacity = array->capacity * VMCI_ARR_CAP_MULT; - size_t new_size = handle_arr_calc_size(new_capacity); + u32 capacity_bump = min(array->max_capacity - array->capacity, + array->capacity); + size_t new_size = handle_arr_calc_size(array->capacity + + capacity_bump); + + if (array->size >= array->max_capacity) + return VMCI_ERROR_NO_MEM; new_array = krealloc(array, new_size, GFP_ATOMIC); if (!new_array) - return; + return VMCI_ERROR_NO_MEM; - new_array->capacity = new_capacity; + new_array->capacity += capacity_bump; *array_ptr = array = new_array; } array->entries[array->size] = handle; array->size++; + + return VMCI_SUCCESS; } /* @@ -74,7 +86,7 @@ struct vmci_handle vmci_handle_arr_remove_entry(struct vmci_handle_arr *array, struct vmci_handle entry_handle) { struct vmci_handle handle = VMCI_INVALID_HANDLE; - size_t i; + u32 i; for (i = 0; i < array->size; i++) { if (vmci_handle_is_equal(array->entries[i], entry_handle)) { @@ -109,7 +121,7 @@ struct vmci_handle vmci_handle_arr_remove_tail(struct vmci_handle_arr *array) * Handle at given index, VMCI_INVALID_HANDLE if invalid index. */ struct vmci_handle -vmci_handle_arr_get_entry(const struct vmci_handle_arr *array, size_t index) +vmci_handle_arr_get_entry(const struct vmci_handle_arr *array, u32 index) { if (unlikely(index >= array->size)) return VMCI_INVALID_HANDLE; @@ -120,7 +132,7 @@ vmci_handle_arr_get_entry(const struct vmci_handle_arr *array, size_t index) bool vmci_handle_arr_has_entry(const struct vmci_handle_arr *array, struct vmci_handle entry_handle) { - size_t i; + u32 i; for (i = 0; i < array->size; i++) if (vmci_handle_is_equal(array->entries[i], entry_handle)) |